55940690 has 48 divisors (see below), whose sum is σ = 110678400. Its totient is φ = 20344896.

The previous prime is 55940671. The next prime is 55940713. The reversal of 55940690 is 9604955.

55940690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55940690² = 6258721595352200, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 133301 + ... + 133719.

It is an arithmetic number, because the mean of its divisors is an integer number (2305800).

Almost surely, 2^55940690 is an apocalyptic number.

55940690 is a deficient number, since it is larger than the sum of its proper divisors (54737710).

55940690 is a wasteful number, since it uses less digits than its factorization.

55940690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 55940690 is about 7479.3509076657. The cubic root of 55940690 is about 382.4511222378.

The spelling of 55940690 in words is "fifty-five million, nine hundred forty thousand, six hundred ninety".