72524139 has 8 divisors (see below), whose sum is σ = 96849552. Its totient is φ = 48274080.

The previous prime is 72524093. The next prime is 72524183. The reversal of 72524139 is 93142527.

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

It is not a de Polignac number, because 72524139 - 2⁸ = 72523883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72524339) 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, 16552 + ... + 20469.

It is an arithmetic number, because the mean of its divisors is an integer number (12106194).

Almost surely, 2^72524139 is an apocalyptic number.

72524139 is a deficient number, since it is larger than the sum of its proper divisors (24325413).

72524139 is a wasteful number, since it uses less digits than its factorization.

72524139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37677.

The product of its digits is 15120, while the sum is 33.

The square root of 72524139 is about 8516.1105558817. The cubic root of 72524139 is about 417.0238184326.

The spelling of 72524139 in words is "seventy-two million, five hundred twenty-four thousand, one hundred thirty-nine".