72304951 has 2 divisors, whose sum is σ = 72304952. Its totient is φ = 72304950.

The previous prime is 72304949. The next prime is 72304957. The reversal of 72304951 is 15940327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72304951 - 2¹ = 72304949 is a prime.

It is a super-2 number, since 2×72304951² = 10456011878224802, which contains 22 as substring.

Together with 72304949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72304957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36152475 + 36152476.

It is an arithmetic number, because the mean of its divisors is an integer number (36152476).

Almost surely, 2^72304951 is an apocalyptic number.

72304951 is a deficient number, since it is larger than the sum of its proper divisors (1).

72304951 is an equidigital number, since it uses as much as digits as its factorization.

72304951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 72304951 is about 8503.2317973815. The cubic root of 72304951 is about 416.6032740536.

The spelling of 72304951 in words is "seventy-two million, three hundred four thousand, nine hundred fifty-one".