72554331 has 8 divisors (see below), whose sum is σ = 101830720. Its totient is φ = 45823752.

The previous prime is 72554329. The next prime is 72554341. The reversal of 72554331 is 13345527.

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

It is not a de Polignac number, because 72554331 - 2¹ = 72554329 is a prime.

It is a super-2 number, since 2×72554331² = 10528261893715122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72554341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636385 + ... + 636498.

It is an arithmetic number, because the mean of its divisors is an integer number (12728840).

Almost surely, 2^72554331 is an apocalyptic number.

72554331 is a deficient number, since it is larger than the sum of its proper divisors (29276389).

72554331 is a wasteful number, since it uses less digits than its factorization.

72554331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272905.

The product of its digits is 12600, while the sum is 30.

The square root of 72554331 is about 8517.8830116409. The cubic root of 72554331 is about 417.0816797944.

Adding to 72554331 its reverse (13345527), we get a palindrome (85899858).

The spelling of 72554331 in words is "seventy-two million, five hundred fifty-four thousand, three hundred thirty-one".