55664031 has 8 divisors (see below), whose sum is σ = 74358064. Its totient is φ = 37039680.

The previous prime is 55664023. The next prime is 55664039. The reversal of 55664031 is 13046655.

It is an interprime number because it is at equal distance from previous prime (55664023) and next prime (55664039).

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

It is not a de Polignac number, because 55664031 - 2³ = 55664023 is a prime.

It is a super-2 number, since 2×55664031² = 6196968694337922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55664031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55664039) 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, 15526 + ... + 18771.

It is an arithmetic number, because the mean of its divisors is an integer number (9294758).

Almost surely, 2^55664031 is an apocalyptic number.

55664031 is a deficient number, since it is larger than the sum of its proper divisors (18694033).

55664031 is a wasteful number, since it uses less digits than its factorization.

55664031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34841.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55664031 is about 7460.8331304218. The cubic root of 55664031 is about 381.8195994948.

The spelling of 55664031 in words is "fifty-five million, six hundred sixty-four thousand, thirty-one".