72575451 has 12 divisors (see below), whose sum is σ = 112895328. Its totient is φ = 44661744.

The previous prime is 72575423. The next prime is 72575471. The reversal of 72575451 is 15457527.

It is not a de Polignac number, because 72575451 - 2⁶ = 72575387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72575471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310035 + ... + 310268.

It is an arithmetic number, because the mean of its divisors is an integer number (9407944).

Almost surely, 2^72575451 is an apocalyptic number.

72575451 is a deficient number, since it is larger than the sum of its proper divisors (40319877).

72575451 is a wasteful number, since it uses less digits than its factorization.

72575451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620322 (or 620319 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 72575451 is about 8519.1226660966. The cubic root of 72575451 is about 417.1221456098.

It can be divided in two parts, 725 and 75451, that added together give a square (76176 = 276²).

The spelling of 72575451 in words is "seventy-two million, five hundred seventy-five thousand, four hundred fifty-one".