55331071 has 2 divisors, whose sum is σ = 55331072. Its totient is φ = 55331070.

The previous prime is 55331057. The next prime is 55331093. The reversal of 55331071 is 17013355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55331071 - 2¹⁹ = 54806783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55331011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665535 + 27665536.

It is an arithmetic number, because the mean of its divisors is an integer number (27665536).

Almost surely, 2^55331071 is an apocalyptic number.

55331071 is a deficient number, since it is larger than the sum of its proper divisors (1).

55331071 is an equidigital number, since it uses as much as digits as its factorization.

55331071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 55331071 is about 7438.4858002150. The cubic root of 55331071 is about 381.0567790590.

The spelling of 55331071 in words is "fifty-five million, three hundred thirty-one thousand, seventy-one".