55694731 has 8 divisors (see below), whose sum is σ = 57313424. Its totient is φ = 54082080.

The previous prime is 55694729. The next prime is 55694741. The reversal of 55694731 is 13749655.

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 55694731 - 2¹ = 55694729 is a prime.

It is a super-2 number, since 2×55694731² = 6203806122324722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55694701) 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, 22621 + ... + 24961.

It is an arithmetic number, because the mean of its divisors is an integer number (7164178).

Almost surely, 2^55694731 is an apocalyptic number.

55694731 is a deficient number, since it is larger than the sum of its proper divisors (1618693).

55694731 is a wasteful number, since it uses less digits than its factorization.

55694731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021.

The product of its digits is 113400, while the sum is 40.

The square root of 55694731 is about 7462.8902578023. The cubic root of 55694731 is about 381.8897807064.

The spelling of 55694731 in words is "fifty-five million, six hundred ninety-four thousand, seven hundred thirty-one".