72553051 has 4 divisors (see below), whose sum is σ = 74893504. Its totient is φ = 70212600.

The previous prime is 72553049. The next prime is 72553057. The reversal of 72553051 is 15035527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72553051 - 2¹ = 72553049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72553057) 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, 1170180 + ... + 1170241.

It is an arithmetic number, because the mean of its divisors is an integer number (18723376).

Almost surely, 2^72553051 is an apocalyptic number.

72553051 is a deficient number, since it is larger than the sum of its proper divisors (2340453).

72553051 is a wasteful number, since it uses less digits than its factorization.

72553051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340452.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 72553051 is about 8517.8078752693. The cubic root of 72553051 is about 417.0792270684.

Adding to 72553051 its reverse (15035527), we get a palindrome (87588578).

The spelling of 72553051 in words is "seventy-two million, five hundred fifty-three thousand, fifty-one".