72749051 has 2 divisors, whose sum is σ = 72749052. Its totient is φ = 72749050.

The previous prime is 72749021. The next prime is 72749057. The reversal of 72749051 is 15094727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72749051 - 2¹⁸ = 72486907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72749057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36374525 + 36374526.

It is an arithmetic number, because the mean of its divisors is an integer number (36374526).

Almost surely, 2^72749051 is an apocalyptic number.

72749051 is a deficient number, since it is larger than the sum of its proper divisors (1).

72749051 is an equidigital number, since it uses as much as digits as its factorization.

72749051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 72749051 is about 8529.3054230693. The cubic root of 72749051 is about 417.4544652552.

The spelling of 72749051 in words is "seventy-two million, seven hundred forty-nine thousand, fifty-one".