72383551 has 2 divisors, whose sum is σ = 72383552. Its totient is φ = 72383550.

The previous prime is 72383537. The next prime is 72383561. The reversal of 72383551 is 15538327.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72383551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72383561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36191775 + 36191776.

It is an arithmetic number, because the mean of its divisors is an integer number (36191776).

Almost surely, 2^72383551 is an apocalyptic number.

72383551 is a deficient number, since it is larger than the sum of its proper divisors (1).

72383551 is an equidigital number, since it uses as much as digits as its factorization.

72383551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 72383551 is about 8507.8523141860. The cubic root of 72383551 is about 416.7541773170.

The spelling of 72383551 in words is "seventy-two million, three hundred eighty-three thousand, five hundred fifty-one".