5405885581 has 2 divisors, whose sum is σ = 5405885582. Its totient is φ = 5405885580.

The previous prime is 5405885531. The next prime is 5405885593. The reversal of 5405885581 is 1855885045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3202428100 + 2203457481 = 56590^2 + 46941^2 .

It is a cyclic number.

It is not a de Polignac number, because 5405885581 - 2¹⁵ = 5405852813 is a prime.

It is a super-2 number, since 2×5405885581² = 58447197829727415122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5405885501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2702942790 + 2702942791.

It is an arithmetic number, because the mean of its divisors is an integer number (2702942791).

Almost surely, 2^5405885581 is an apocalyptic number.

It is an amenable number.

5405885581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5405885581 is an equidigital number, since it uses as much as digits as its factorization.

5405885581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280000, while the sum is 49.

The square root of 5405885581 is about 73524.7276839568. The cubic root of 5405885581 is about 1755.0478019896.

The spelling of 5405885581 in words is "five billion, four hundred five million, eight hundred eighty-five thousand, five hundred eighty-one".