72335951 has 4 divisors (see below), whose sum is σ = 72357600. Its totient is φ = 72314304.

The previous prime is 72335917. The next prime is 72335981. The reversal of 72335951 is 15953327.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72335951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72335981) 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, 4631 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (18089400).

Almost surely, 2^72335951 is an apocalyptic number.

72335951 is a deficient number, since it is larger than the sum of its proper divisors (21649).

72335951 is a wasteful number, since it uses less digits than its factorization.

72335951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21648.

The product of its digits is 28350, while the sum is 35.

The square root of 72335951 is about 8505.0544383913. The cubic root of 72335951 is about 416.6628036620.

It can be divided in two parts, 72335 and 951, that multiplied together give a triangular number (68790585 = T₁₁₇₂₉).

The spelling of 72335951 in words is "seventy-two million, three hundred thirty-five thousand, nine hundred fifty-one".