55265772 has 24 divisors (see below), whose sum is σ = 131140800. Its totient is φ = 18109456.

The previous prime is 55265741. The next prime is 55265779. The reversal of 55265772 is 27756255.

It is a self number, because there is not a number n which added to its sum of digits gives 55265772.

It is not an unprimeable number, because it can be changed into a prime (55265779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38322 + ... + 39737.

It is an arithmetic number, because the mean of its divisors is an integer number (5464200).

Almost surely, 2^55265772 is an apocalyptic number.

It is an amenable number.

55265772 is an abundant number, since it is smaller than the sum of its proper divisors (75875028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55265772 is a wasteful number, since it uses less digits than its factorization.

55265772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78125 (or 78123 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 55265772 is about 7434.0952374852. The cubic root of 55265772 is about 380.9068185817.

The spelling of 55265772 in words is "fifty-five million, two hundred sixty-five thousand, seven hundred seventy-two".