55806737 has 12 divisors (see below), whose sum is σ = 65044980. Its totient is φ = 47740896.

The previous prime is 55806703. The next prime is 55806811. The reversal of 55806737 is 73760855.

It can be written as a sum of positive squares in 2 ways, for example, as 13608721 + 42198016 = 3689^2 + 6496^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55806737 is a prime.

It is a super-2 number, since 2×55806737² = 6228783789174338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55806694 and 55806703.

It is not an unprimeable number, because it can be changed into a prime (55802737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38339 + ... + 39767.

It is an arithmetic number, because the mean of its divisors is an integer number (5420415).

Almost surely, 2^55806737 is an apocalyptic number.

It is an amenable number.

55806737 is a deficient number, since it is larger than the sum of its proper divisors (9238243).

55806737 is a wasteful number, since it uses less digits than its factorization.

55806737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 55806737 is about 7470.3906859012. The cubic root of 55806737 is about 382.1456116393.

The spelling of 55806737 in words is "fifty-five million, eight hundred six thousand, seven hundred thirty-seven".