72051707 has 12 divisors (see below), whose sum is σ = 90263376. Its totient is φ = 57007440.

The previous prime is 72051671. The next prime is 72051737. The reversal of 72051707 is 70715027.

It is not a de Polignac number, because 72051707 - 2⁶ = 72051643 is a prime.

It is a super-2 number, since 2×72051707² = 10382896963227698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72051707.

It is not an unprimeable number, because it can be changed into a prime (72051737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55919 + ... + 57192.

It is an arithmetic number, because the mean of its divisors is an integer number (7521948).

Almost surely, 2^72051707 is an apocalyptic number.

72051707 is a deficient number, since it is larger than the sum of its proper divisors (18211669).

72051707 is a wasteful number, since it uses less digits than its factorization.

72051707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113138 (or 113131 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 72051707 is about 8488.3276916010. The cubic root of 72051707 is about 416.1163286452.

The spelling of 72051707 in words is "seventy-two million, fifty-one thousand, seven hundred seven".