72519061 has 2 divisors, whose sum is σ = 72519062. Its totient is φ = 72519060.

The previous prime is 72519047. The next prime is 72519079. The reversal of 72519061 is 16091527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 34880836 = 6135^2 + 5906^2 .

It is a cyclic number.

It is not a de Polignac number, because 72519061 - 2⁷ = 72518933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72519011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36259530 + 36259531.

It is an arithmetic number, because the mean of its divisors is an integer number (36259531).

Almost surely, 2^72519061 is an apocalyptic number.

It is an amenable number.

72519061 is a deficient number, since it is larger than the sum of its proper divisors (1).

72519061 is an equidigital number, since it uses as much as digits as its factorization.

72519061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 72519061 is about 8515.8124098644. The cubic root of 72519061 is about 417.0140851382.

The spelling of 72519061 in words is "seventy-two million, five hundred nineteen thousand, sixty-one".