55787572 has 12 divisors (see below), whose sum is σ = 102766720. Its totient is φ = 26425656.

The previous prime is 55787551. The next prime is 55787579. The reversal of 55787572 is 27578755.

It is a super-2 number, since 2×55787572² = 6224506379310368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55787579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366948 + ... + 367099.

Almost surely, 2^55787572 is an apocalyptic number.

It is an amenable number.

55787572 is a deficient number, since it is larger than the sum of its proper divisors (46979148).

55787572 is a wasteful number, since it uses less digits than its factorization.

55787572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734070 (or 734068 counting only the distinct ones).

The product of its digits is 686000, while the sum is 46.

The square root of 55787572 is about 7469.1078449839. The cubic root of 55787572 is about 382.1018614903.

The spelling of 55787572 in words is "fifty-five million, seven hundred eighty-seven thousand, five hundred seventy-two".