72253899 has 12 divisors (see below), whose sum is σ = 106587936. Its totient is φ = 47144112.

The previous prime is 72253897. The next prime is 72253919. The reversal of 72253899 is 99835227.

72253899 is a `hidden beast` number, since 7 + 22 + 538 + 99 = 666.

It is not a de Polignac number, because 72253899 - 2¹ = 72253897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72253897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84984 + ... + 85829.

It is an arithmetic number, because the mean of its divisors is an integer number (8882328).

Almost surely, 2^72253899 is an apocalyptic number.

72253899 is a deficient number, since it is larger than the sum of its proper divisors (34334037).

72253899 is a wasteful number, since it uses less digits than its factorization.

72253899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170866 (or 170863 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 72253899 is about 8500.2293498470. The cubic root of 72253899 is about 416.5052012953.

The spelling of 72253899 in words is "seventy-two million, two hundred fifty-three thousand, eight hundred ninety-nine".