55740625 has 12 divisors (see below), whose sum is σ = 69675228. Its totient is φ = 44590000.

The previous prime is 55740589. The next prime is 55740673. The reversal of 55740625 is 52604755.

It can be written as a sum of positive squares in 6 ways, for example, as 36529936 + 19210689 = 6044^2 + 4383^2 .

It is not a de Polignac number, because 55740625 - 2¹¹ = 55738577 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5794 + ... + 12043.

It is an arithmetic number, because the mean of its divisors is an integer number (5806269).

Almost surely, 2^55740625 is an apocalyptic number.

It is an amenable number.

55740625 is a deficient number, since it is larger than the sum of its proper divisors (13934603).

55740625 is an frugal number, since it uses more digits than its factorization.

55740625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17862 (or 17842 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 55740625 is about 7465.9644387045. The cubic root of 55740625 is about 381.9946478239.

It can be divided in two parts, 55740 and 625, that added together give a palindrome (56365).

The spelling of 55740625 in words is "fifty-five million, seven hundred forty thousand, six hundred twenty-five".