72457451 has 16 divisors (see below), whose sum is σ = 85650048. Its totient is φ = 60547200.

The previous prime is 72457403. The next prime is 72457453. The reversal of 72457451 is 15475427.

It is not a de Polignac number, because 72457451 - 2⁶ = 72457387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72457453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3536 + ... + 12546.

It is an arithmetic number, because the mean of its divisors is an integer number (5353128).

Almost surely, 2^72457451 is an apocalyptic number.

72457451 is a deficient number, since it is larger than the sum of its proper divisors (13192597).

72457451 is a wasteful number, since it uses less digits than its factorization.

72457451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9082.

The product of its digits is 39200, while the sum is 35.

The square root of 72457451 is about 8512.1942529526. The cubic root of 72457451 is about 416.8959574963.

The spelling of 72457451 in words is "seventy-two million, four hundred fifty-seven thousand, four hundred fifty-one".