70055520 has 48 divisors (see below), whose sum is σ = 220676400. Its totient is φ = 18681344.

The previous prime is 70055509. The next prime is 70055537. The reversal of 70055520 is 2555007.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent 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, 72495 + ... + 73454.

It is an arithmetic number, because the mean of its divisors is an integer number (4597425).

Almost surely, 2^70055520 is an apocalyptic number.

It is an amenable number.

70055520 is an abundant number, since it is smaller than the sum of its proper divisors (150620880).

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

70055520 is a wasteful number, since it uses less digits than its factorization.

70055520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145967 (or 145959 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 70055520 is about 8369.9175623180. The cubic root of 70055520 is about 412.2374601201.

The spelling of 70055520 in words is "seventy million, fifty-five thousand, five hundred twenty".