55997526 has 16 divisors (see below), whose sum is σ = 120610224. Its totient is φ = 17229984.

The previous prime is 55997519. The next prime is 55997533. The reversal of 55997526 is 62579955.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55997519) and next prime (55997533).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358881 + ... + 359036.

It is an arithmetic number, because the mean of its divisors is an integer number (7538139).

Almost surely, 2^55997526 is an apocalyptic number.

55997526 is an abundant number, since it is smaller than the sum of its proper divisors (64612698).

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

55997526 is a wasteful number, since it uses less digits than its factorization.

55997526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717935.

The product of its digits is 850500, while the sum is 48.

The square root of 55997526 is about 7483.1494706440. The cubic root of 55997526 is about 382.5806024337.

The spelling of 55997526 in words is "fifty-five million, nine hundred ninety-seven thousand, five hundred twenty-six".