55520637 has 8 divisors (see below), whose sum is σ = 74176704. Its totient is φ = 36939168.

The previous prime is 55520599. The next prime is 55520639. The reversal of 55520637 is 73602555.

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

It is not a de Polignac number, because 55520637 - 2⁶ = 55520573 is a prime.

It is a super-2 number, since 2×55520637² = 6165082265771538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55520598 and 55520607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16888 + ... + 19905.

It is an arithmetic number, because the mean of its divisors is an integer number (9272088).

Almost surely, 2^55520637 is an apocalyptic number.

It is an amenable number.

55520637 is a deficient number, since it is larger than the sum of its proper divisors (18656067).

55520637 is a wasteful number, since it uses less digits than its factorization.

55520637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37299.

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 55520637 is about 7451.2171488959. The cubic root of 55520637 is about 381.4914538938.

The spelling of 55520637 in words is "fifty-five million, five hundred twenty thousand, six hundred thirty-seven".