55970681 has 16 divisors (see below), whose sum is σ = 64076544. Its totient is φ = 48432384.

The previous prime is 55970659. The next prime is 55970683. The reversal of 55970681 is 18607955.

It is not a de Polignac number, because 55970681 - 2¹⁰ = 55969657 is a prime.

It is a super-2 number, since 2×55970681² = 6265434263207522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55970683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102050 + ... + 102596.

It is an arithmetic number, because the mean of its divisors is an integer number (4004784).

Almost surely, 2^55970681 is an apocalyptic number.

It is an amenable number.

55970681 is a deficient number, since it is larger than the sum of its proper divisors (8105863).

55970681 is a wasteful number, since it uses less digits than its factorization.

55970681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 55970681 is about 7481.3555589880. The cubic root of 55970681 is about 382.5194567687.

The spelling of 55970681 in words is "fifty-five million, nine hundred seventy thousand, six hundred eighty-one".