55896820 has 24 divisors (see below), whose sum is σ = 134152704. Its totient is φ = 19164576.

The previous prime is 55896811. The next prime is 55896829. The reversal of 55896820 is 2869855.

It is an interprime number because it is at equal distance from previous prime (55896811) and next prime (55896829).

It is a super-2 number, since 2×55896820² = 6248908972224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55896829) 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, 199492 + ... + 199771.

It is an arithmetic number, because the mean of its divisors is an integer number (5589696).

Almost surely, 2^55896820 is an apocalyptic number.

It is an amenable number.

55896820 is an abundant number, since it is smaller than the sum of its proper divisors (78255884).

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

55896820 is a wasteful number, since it uses less digits than its factorization.

55896820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399279 (or 399277 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 55896820 is about 7476.4175913334. The cubic root of 55896820 is about 382.3511203812.

The spelling of 55896820 in words is "fifty-five million, eight hundred ninety-six thousand, eight hundred twenty".