90415457 has 8 divisors (see below), whose sum is σ = 101301312. Its totient is φ = 79974000.

The previous prime is 90415453. The next prime is 90415463. The reversal of 90415457 is 75451409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90415457 - 2² = 90415453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90415453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110669 + ... + 111482.

It is an arithmetic number, because the mean of its divisors is an integer number (12662664).

Almost surely, 2^90415457 is an apocalyptic number.

It is an amenable number.

90415457 is a deficient number, since it is larger than the sum of its proper divisors (10885855).

90415457 is a wasteful number, since it uses less digits than its factorization.

90415457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222199.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 90415457 is about 9508.7042755572. The cubic root of 90415457 is about 448.8289833379.

It can be divided in two parts, 904 and 15457, that added together give a palindrome (16361).

The spelling of 90415457 in words is "ninety million, four hundred fifteen thousand, four hundred fifty-seven".