72737554 has 8 divisors (see below), whose sum is σ = 109387980. Its totient is φ = 36274896.

The previous prime is 72737549. The next prime is 72737573. The reversal of 72737554 is 45573727.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58936329 + 13801225 = 7677^2 + 3715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45969 + ... + 47524.

Almost surely, 2^72737554 is an apocalyptic number.

72737554 is a deficient number, since it is larger than the sum of its proper divisors (36650426).

72737554 is a wasteful number, since it uses less digits than its factorization.

72737554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93884.

The product of its digits is 205800, while the sum is 40.

The square root of 72737554 is about 8528.6314259675. The cubic root of 72737554 is about 417.4324730927.

The spelling of 72737554 in words is "seventy-two million, seven hundred thirty-seven thousand, five hundred fifty-four".