72810554 has 8 divisors (see below), whose sum is σ = 109470528. Its totient is φ = 36320380.

The previous prime is 72810553. The next prime is 72810559. The reversal of 72810554 is 45501827.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72810554.

It is not an unprimeable number, because it can be changed into a prime (72810553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41372 + ... + 43095.

It is an arithmetic number, because the mean of its divisors is an integer number (13683816).

Almost surely, 2^72810554 is an apocalyptic number.

72810554 is a deficient number, since it is larger than the sum of its proper divisors (36659974).

72810554 is a wasteful number, since it uses less digits than its factorization.

72810554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84900.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 72810554 is about 8532.9100546062. The cubic root of 72810554 is about 417.5720726089.

The spelling of 72810554 in words is "seventy-two million, eight hundred ten thousand, five hundred fifty-four".