70531855 has 4 divisors (see below), whose sum is σ = 84638232. Its totient is φ = 56425480.

The previous prime is 70531837. The next prime is 70531873. The reversal of 70531855 is 55813507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55813507 = 19 ⋅2937553.

It is an interprime number because it is at equal distance from previous prime (70531837) and next prime (70531873).

It is not a de Polignac number, because 70531855 - 2²¹ = 68434703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70531855.

It is a congruent number.

It is an unprimeable number.

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, 7053181 + ... + 7053190.

It is an arithmetic number, because the mean of its divisors is an integer number (21159558).

Almost surely, 2^70531855 is an apocalyptic number.

70531855 is a deficient number, since it is larger than the sum of its proper divisors (14106377).

70531855 is a wasteful number, since it uses less digits than its factorization.

70531855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106376.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 70531855 is about 8398.3245352868. The cubic root of 70531855 is about 413.1696719530.

The spelling of 70531855 in words is "seventy million, five hundred thirty-one thousand, eight hundred fifty-five".