70520755 has 4 divisors (see below), whose sum is σ = 84624912. Its totient is φ = 56416600.

The previous prime is 70520741. The next prime is 70520759. The reversal of 70520755 is 55702507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55702507 = 7 ⋅7957501.

It is not a de Polignac number, because 70520755 - 2⁷ = 70520627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70520759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7052071 + ... + 7052080.

It is an arithmetic number, because the mean of its divisors is an integer number (21156228).

Almost surely, 2^70520755 is an apocalyptic number.

70520755 is a deficient number, since it is larger than the sum of its proper divisors (14104157).

70520755 is a wasteful number, since it uses less digits than its factorization.

70520755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14104156.

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 70520755 is about 8397.6636631863. The cubic root of 70520755 is about 413.1479965273.

The spelling of 70520755 in words is "seventy million, five hundred twenty thousand, seven hundred fifty-five".