72461533 has 2 divisors, whose sum is σ = 72461534. Its totient is φ = 72461532.

The previous prime is 72461513. The next prime is 72461549. The reversal of 72461533 is 33516427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52229529 + 20232004 = 7227^2 + 4498^2 .

It is a cyclic number.

It is not a de Polignac number, because 72461533 - 2²¹ = 70364381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72461495 and 72461504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72461513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36230766 + 36230767.

It is an arithmetic number, because the mean of its divisors is an integer number (36230767).

Almost surely, 2^72461533 is an apocalyptic number.

It is an amenable number.

72461533 is a deficient number, since it is larger than the sum of its proper divisors (1).

72461533 is an equidigital number, since it uses as much as digits as its factorization.

72461533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 72461533 is about 8512.4340232392. The cubic root of 72461533 is about 416.9037861706.

The spelling of 72461533 in words is "seventy-two million, four hundred sixty-one thousand, five hundred thirty-three".