72461539 has 8 divisors (see below), whose sum is σ = 74926080. Its totient is φ = 70005000.

The previous prime is 72461533. The next prime is 72461549. The reversal of 72461539 is 93516427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72461539 - 2⁵ = 72461507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72461498 and 72461507.

It is not an unprimeable number, because it can be changed into a prime (72461533) 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 7 ways as a sum of consecutive naturals, for example, 20664 + ... + 23914.

It is an arithmetic number, because the mean of its divisors is an integer number (9365760).

Almost surely, 2^72461539 is an apocalyptic number.

72461539 is a deficient number, since it is larger than the sum of its proper divisors (2464541).

72461539 is a wasteful number, since it uses less digits than its factorization.

72461539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001.

The product of its digits is 45360, while the sum is 37.

The square root of 72461539 is about 8512.4343756648. The cubic root of 72461539 is about 416.9037976775.

The spelling of 72461539 in words is "seventy-two million, four hundred sixty-one thousand, five hundred thirty-nine".