72374551 has 2 divisors, whose sum is σ = 72374552. Its totient is φ = 72374550.

The previous prime is 72374543. The next prime is 72374557. The reversal of 72374551 is 15547327.

It is a strong prime.

It is an emirp because it is prime and its reverse (15547327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72374551 - 2³ = 72374543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72374557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36187275 + 36187276.

It is an arithmetic number, because the mean of its divisors is an integer number (36187276).

Almost surely, 2^72374551 is an apocalyptic number.

72374551 is a deficient number, since it is larger than the sum of its proper divisors (1).

72374551 is an equidigital number, since it uses as much as digits as its factorization.

72374551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 34.

The square root of 72374551 is about 8507.3233745991. The cubic root of 72374551 is about 416.7369038573.

The spelling of 72374551 in words is "seventy-two million, three hundred seventy-four thousand, five hundred fifty-one".