55897280 has 28 divisors (see below), whose sum is σ = 133106160. Its totient is φ = 22358784.

The previous prime is 55897279. The next prime is 55897327. The reversal of 55897280 is 8279855.

It is a super-2 number, since 2×55897280² = 6249011822796800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87020 + ... + 87659.

Almost surely, 2^55897280 is an apocalyptic number.

It is an amenable number.

55897280 is an abundant number, since it is smaller than the sum of its proper divisors (77208880).

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

55897280 is a wasteful number, since it uses less digits than its factorization.

55897280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174696 (or 174686 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 55897280 is about 7476.4483546668. The cubic root of 55897280 is about 382.3521692246.

The spelling of 55897280 in words is "fifty-five million, eight hundred ninety-seven thousand, two hundred eighty".