72955481 has 2 divisors, whose sum is σ = 72955482. Its totient is φ = 72955480.

The previous prime is 72955469. The next prime is 72955513. The reversal of 72955481 is 18455927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 9211225 = 7984^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 72955481 - 2⁶ = 72955417 is a prime.

It is a super-2 number, since 2×72955481² = 10645004415882722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72955681) 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 as a sum of consecutive naturals, namely, 36477740 + 36477741.

It is an arithmetic number, because the mean of its divisors is an integer number (36477741).

Almost surely, 2^72955481 is an apocalyptic number.

It is an amenable number.

72955481 is a deficient number, since it is larger than the sum of its proper divisors (1).

72955481 is an equidigital number, since it uses as much as digits as its factorization.

72955481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 72955481 is about 8541.3980705737. The cubic root of 72955481 is about 417.8489434567.

The spelling of 72955481 in words is "seventy-two million, nine hundred fifty-five thousand, four hundred eighty-one".