72570451 has 12 divisors (see below), whose sum is σ = 77659056. Its totient is φ = 67686080.

The previous prime is 72570439. The next prime is 72570461. The reversal of 72570451 is 15407527.

It is not a de Polignac number, because 72570451 - 2¹¹ = 72568403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72570461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37725 + ... + 39601.

It is an arithmetic number, because the mean of its divisors is an integer number (6471588).

Almost surely, 2^72570451 is an apocalyptic number.

72570451 is a deficient number, since it is larger than the sum of its proper divisors (5088605).

72570451 is a wasteful number, since it uses less digits than its factorization.

72570451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982 (or 1941 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 72570451 is about 8518.8292035936. The cubic root of 72570451 is about 417.1125663439.

Adding to 72570451 its reverse (15407527), we get a palindrome (87977978).

The spelling of 72570451 in words is "seventy-two million, five hundred seventy thousand, four hundred fifty-one".