72100481 has 2 divisors, whose sum is σ = 72100482. Its totient is φ = 72100480.

The previous prime is 72100411. The next prime is 72100493. The reversal of 72100481 is 18400127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70291456 + 1809025 = 8384^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 72100481 - 2²⁶ = 4991617 is a prime.

It is a super-2 number, since 2×72100481² = 10396958720862722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72100411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36050240 + 36050241.

It is an arithmetic number, because the mean of its divisors is an integer number (36050241).

Almost surely, 2^72100481 is an apocalyptic number.

It is an amenable number.

72100481 is a deficient number, since it is larger than the sum of its proper divisors (1).

72100481 is an equidigital number, since it uses as much as digits as its factorization.

72100481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 72100481 is about 8491.2002096288. The cubic root of 72100481 is about 416.2102014151.

The spelling of 72100481 in words is "seventy-two million, one hundred thousand, four hundred eighty-one".