72551049 has 8 divisors (see below), whose sum is σ = 96851040. Its totient is φ = 48309216.

The previous prime is 72551023. The next prime is 72551051. The reversal of 72551049 is 94015527.

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

It is not a de Polignac number, because 72551049 - 2⁹ = 72550537 is a prime.

It is a super-2 number, since 2×72551049² = 10527309422000802, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72553049) 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, 11539 + ... + 16680.

It is an arithmetic number, because the mean of its divisors is an integer number (12106380).

Almost surely, 2^72551049 is an apocalyptic number.

It is an amenable number.

72551049 is a deficient number, since it is larger than the sum of its proper divisors (24299991).

72551049 is a wasteful number, since it uses less digits than its factorization.

72551049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29079.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 72551049 is about 8517.6903559592. The cubic root of 72551049 is about 417.0753907937.

The spelling of 72551049 in words is "seventy-two million, five hundred fifty-one thousand, forty-nine".