55797240 has 64 divisors (see below), whose sum is σ = 167909760. Its totient is φ = 14833280.

The previous prime is 55797233. The next prime is 55797257. The reversal of 55797240 is 4279755.

It is a super-2 number, since 2×55797240² = 6226663983235200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58447 + ... + 59393.

It is an arithmetic number, because the mean of its divisors is an integer number (2623590).

Almost surely, 2^55797240 is an apocalyptic number.

It is an amenable number.

55797240 is an abundant number, since it is smaller than the sum of its proper divisors (112112520).

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

55797240 is a wasteful number, since it uses less digits than its factorization.

55797240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 55797240 is about 7469.7550160631. The cubic root of 55797240 is about 382.1239329976.

The spelling of 55797240 in words is "fifty-five million, seven hundred ninety-seven thousand, two hundred forty".