55056870 has 96 divisors (see below), whose sum is σ = 164436480. Its totient is φ = 12640320.

The previous prime is 55056839. The next prime is 55056887. The reversal of 55056870 is 7865055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17347 + ... + 20273.

It is an arithmetic number, because the mean of its divisors is an integer number (1712880).

Almost surely, 2^55056870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55056870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82218240).

55056870 is an abundant number, since it is smaller than the sum of its proper divisors (109379610).

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

55056870 is a wasteful number, since it uses less digits than its factorization.

55056870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 55056870 is about 7420.0316710914. The cubic root of 55056870 is about 380.4262760197.

The spelling of 55056870 in words is "fifty-five million, fifty-six thousand, eight hundred seventy".