72512929 has 2 divisors, whose sum is σ = 72512930. Its totient is φ = 72512928.

The previous prime is 72512917. The next prime is 72512941. The reversal of 72512929 is 92921527.

It is a balanced prime because it is at equal distance from previous prime (72512917) and next prime (72512941).

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 8880400 = 7977^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 72512929 - 2¹³ = 72504737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72512989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36256464 + 36256465.

It is an arithmetic number, because the mean of its divisors is an integer number (36256465).

Almost surely, 2^72512929 is an apocalyptic number.

It is an amenable number.

72512929 is a deficient number, since it is larger than the sum of its proper divisors (1).

72512929 is an equidigital number, since it uses as much as digits as its factorization.

72512929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 72512929 is about 8515.4523661400. The cubic root of 72512929 is about 417.0023309759.

It can be divided in two parts, 72512 and 929, that added together give a square (73441 = 271²).

The spelling of 72512929 in words is "seventy-two million, five hundred twelve thousand, nine hundred twenty-nine".