55697611 has 4 divisors (see below), whose sum is σ = 55721512. Its totient is φ = 55673712.

The previous prime is 55697581. The next prime is 55697657. The reversal of 55697611 is 11679655.

55697611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55697611 - 2¹⁹ = 55173323 is a prime.

It is a super-2 number, since 2×55697611² = 6204447742214642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55691611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8025 + ... + 13258.

It is an arithmetic number, because the mean of its divisors is an integer number (13930378).

Almost surely, 2^55697611 is an apocalyptic number.

55697611 is a deficient number, since it is larger than the sum of its proper divisors (23901).

55697611 is a wasteful number, since it uses less digits than its factorization.

55697611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23900.

The product of its digits is 56700, while the sum is 40.

The square root of 55697611 is about 7463.0832100413. The cubic root of 55697611 is about 381.8963631580.

The spelling of 55697611 in words is "fifty-five million, six hundred ninety-seven thousand, six hundred eleven".