72541651 has 8 divisors (see below), whose sum is σ = 89282144. Its totient is φ = 57395520.

The previous prime is 72541619. The next prime is 72541657. The reversal of 72541651 is 15614527.

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

It is not a de Polignac number, because 72541651 - 2⁵ = 72541619 is a prime.

It is a super-2 number, since 2×72541651² = 10524582259611602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72541657) 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, 398490 + ... + 398671.

It is an arithmetic number, because the mean of its divisors is an integer number (11160268).

Almost surely, 2^72541651 is an apocalyptic number.

72541651 is a deficient number, since it is larger than the sum of its proper divisors (16740493).

72541651 is a wasteful number, since it uses less digits than its factorization.

72541651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797181.

The product of its digits is 8400, while the sum is 31.

The square root of 72541651 is about 8517.1386627200. The cubic root of 72541651 is about 417.0573812044.

The spelling of 72541651 in words is "seventy-two million, five hundred forty-one thousand, six hundred fifty-one".