72514981 has 8 divisors (see below), whose sum is σ = 90408384. Its totient is φ = 56505120.

The previous prime is 72514973. The next prime is 72515011. The reversal of 72514981 is 18941527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72514981 - 2³ = 72514973 is a prime.

It is a super-2 number, since 2×72514981² = 10516844938860722, 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 72514981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72514081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470800 + ... + 470953.

It is an arithmetic number, because the mean of its divisors is an integer number (11301048).

Almost surely, 2^72514981 is an apocalyptic number.

It is an amenable number.

72514981 is a deficient number, since it is larger than the sum of its proper divisors (17893403).

72514981 is a wasteful number, since it uses less digits than its factorization.

72514981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941771.

The product of its digits is 20160, while the sum is 37.

The square root of 72514981 is about 8515.5728521339. The cubic root of 72514981 is about 417.0062644386.

The spelling of 72514981 in words is "seventy-two million, five hundred fourteen thousand, nine hundred eighty-one".