56087980 has 24 divisors (see below), whose sum is σ = 126845712. Its totient is φ = 20709312.

The previous prime is 56087971. The next prime is 56088023. The reversal of 56087980 is 8978065.

56087980 = T₂₉₃₁ + T₂₉₃₂ + ... + T₂₉₄₃.

It is a happy 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, 107602 + ... + 108121.

It is an arithmetic number, because the mean of its divisors is an integer number (5285238).

Almost surely, 2^56087980 is an apocalyptic number.

It is an amenable number.

56087980 is an abundant number, since it is smaller than the sum of its proper divisors (70757732).

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

56087980 is a wasteful number, since it uses less digits than its factorization.

56087980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215745 (or 215743 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 56087980 is about 7489.1908775248. The cubic root of 56087980 is about 382.7864884894.

The spelling of 56087980 in words is "fifty-six million, eighty-seven thousand, nine hundred eighty".