55072507 has 16 divisors (see below), whose sum is σ = 66461440. Its totient is φ = 44579808.

The previous prime is 55072487. The next prime is 55072519. The reversal of 55072507 is 70527055.

It is not a de Polignac number, because 55072507 - 2¹⁵ = 55039739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55072607) 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, 72373 + ... + 73129.

It is an arithmetic number, because the mean of its divisors is an integer number (4153840).

Almost surely, 2^55072507 is an apocalyptic number.

55072507 is a deficient number, since it is larger than the sum of its proper divisors (11388933).

55072507 is a wasteful number, since it uses less digits than its factorization.

55072507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 55072507 is about 7421.0852979871. The cubic root of 55072507 is about 380.4622882533.

The spelling of 55072507 in words is "fifty-five million, seventy-two thousand, five hundred seven".