72547441 has 2 divisors, whose sum is σ = 72547442. Its totient is φ = 72547440.

The previous prime is 72547427. The next prime is 72547481. The reversal of 72547441 is 14474527.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68956416 + 3591025 = 8304^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 72547441 - 2¹³ = 72539249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72547397 and 72547406.

It is not a weakly prime, because it can be changed into another prime (72547411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36273720 + 36273721.

It is an arithmetic number, because the mean of its divisors is an integer number (36273721).

Almost surely, 2^72547441 is an apocalyptic number.

It is an amenable number.

72547441 is a deficient number, since it is larger than the sum of its proper divisors (1).

72547441 is an equidigital number, since it uses as much as digits as its factorization.

72547441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 34.

The square root of 72547441 is about 8517.4785588224. The cubic root of 72547441 is about 417.0684768897.

The spelling of 72547441 in words is "seventy-two million, five hundred forty-seven thousand, four hundred forty-one".