72411257 has 8 divisors (see below), whose sum is σ = 76768512. Its totient is φ = 68180400.

The previous prime is 72411253. The next prime is 72411271. The reversal of 72411257 is 75211427.

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

It is a cyclic number.

It is not a de Polignac number, because 72411257 - 2² = 72411253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72411253) 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, 30419 + ... + 32712.

It is an arithmetic number, because the mean of its divisors is an integer number (9596064).

Almost surely, 2^72411257 is an apocalyptic number.

It is an amenable number.

72411257 is a deficient number, since it is larger than the sum of its proper divisors (4357255).

72411257 is a wasteful number, since it uses less digits than its factorization.

72411257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63199.

The product of its digits is 3920, while the sum is 29.

The square root of 72411257 is about 8509.4804189210. The cubic root of 72411257 is about 416.8073437164.

The spelling of 72411257 in words is "seventy-two million, four hundred eleven thousand, two hundred fifty-seven".