70501531 has 4 divisors (see below), whose sum is σ = 70659000. Its totient is φ = 70344064.

The previous prime is 70501489. The next prime is 70501537. The reversal of 70501531 is 13510507.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70501531 - 2¹⁷ = 70370459 is a prime.

It is a super-2 number, since 2×70501531² = 9940931746687922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70501537) 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, 78061 + ... + 78958.

It is an arithmetic number, because the mean of its divisors is an integer number (17664750).

Almost surely, 2^70501531 is an apocalyptic number.

70501531 is a deficient number, since it is larger than the sum of its proper divisors (157469).

70501531 is a wasteful number, since it uses less digits than its factorization.

70501531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157468.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 70501531 is about 8396.5189811016. The cubic root of 70501531 is about 413.1104516518.

The spelling of 70501531 in words is "seventy million, five hundred one thousand, five hundred thirty-one".