72571379 has 4 divisors (see below), whose sum is σ = 72860760. Its totient is φ = 72282000.

The previous prime is 72571327. The next prime is 72571439. The reversal of 72571379 is 97317527.

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-72571379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72571309) 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, 144314 + ... + 144815.

It is an arithmetic number, because the mean of its divisors is an integer number (18215190).

Almost surely, 2^72571379 is an apocalyptic number.

72571379 is a deficient number, since it is larger than the sum of its proper divisors (289381).

72571379 is a wasteful number, since it uses less digits than its factorization.

72571379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289380.

The product of its digits is 92610, while the sum is 41.

The square root of 72571379 is about 8518.8836709982. The cubic root of 72571379 is about 417.1143442889.

The spelling of 72571379 in words is "seventy-two million, five hundred seventy-one thousand, three hundred seventy-nine".