55070988 has 48 divisors (see below), whose sum is σ = 147485184. Its totient is φ = 15667200.

The previous prime is 55070969. The next prime is 55070989. The reversal of 55070988 is 88907055.

It is a super-2 number, since 2×55070988² = 6065627438592288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (55070989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20313 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (3072608).

Almost surely, 2^55070988 is an apocalyptic number.

It is an amenable number.

55070988 is an abundant number, since it is smaller than the sum of its proper divisors (92414196).

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

55070988 is a wasteful number, since it uses less digits than its factorization.

55070988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 55070988 is about 7420.9829537602. The cubic root of 55070988 is about 380.4587902736.

The spelling of 55070988 in words is "fifty-five million, seventy thousand, nine hundred eighty-eight".