70520501 has 4 divisors (see below), whose sum is σ = 70831392. Its totient is φ = 70209612.

The previous prime is 70520497. The next prime is 70520503. The reversal of 70520501 is 10502507.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70520501 - 2² = 70520497 is a prime.

It is a super-2 number, since 2×70520501² = 9946282122582002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70520503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155105 + ... + 155558.

It is an arithmetic number, because the mean of its divisors is an integer number (17707848).

Almost surely, 2^70520501 is an apocalyptic number.

It is an amenable number.

70520501 is a deficient number, since it is larger than the sum of its proper divisors (310891).

70520501 is a wasteful number, since it uses less digits than its factorization.

70520501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310890.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 70520501 is about 8397.6485399188. The cubic root of 70520501 is about 413.1475005044.

The spelling of 70520501 in words is "seventy million, five hundred twenty thousand, five hundred one".