55697430 has 16 divisors (see below), whose sum is σ = 133673904. Its totient is φ = 14852640.

The previous prime is 55697387. The next prime is 55697443. The reversal of 55697430 is 3479655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928261 + ... + 928320.

It is an arithmetic number, because the mean of its divisors is an integer number (8354619).

Almost surely, 2^55697430 is an apocalyptic number.

55697430 is an abundant number, since it is smaller than the sum of its proper divisors (77976474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55697430 is a wasteful number, since it uses less digits than its factorization.

55697430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856591.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 55697430 is about 7463.0710836759. The cubic root of 55697430 is about 381.8959494759.

The spelling of 55697430 in words is "fifty-five million, six hundred ninety-seven thousand, four hundred thirty".