72249053 has 4 divisors (see below), whose sum is σ = 72320028. Its totient is φ = 72178080.

The previous prime is 72249029. The next prime is 72249059. The reversal of 72249053 is 35094227.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41190724 + 31058329 = 6418^2 + 5573^2 .

It is a cyclic number.

It is not a de Polignac number, because 72249053 - 2¹² = 72244957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72249059) 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, 33938 + ... + 36003.

It is an arithmetic number, because the mean of its divisors is an integer number (18080007).

Almost surely, 2^72249053 is an apocalyptic number.

It is an amenable number.

72249053 is a deficient number, since it is larger than the sum of its proper divisors (70975).

72249053 is a wasteful number, since it uses less digits than its factorization.

72249053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70974.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 72249053 is about 8499.9442939351. The cubic root of 72249053 is about 416.4958895518.

The spelling of 72249053 in words is "seventy-two million, two hundred forty-nine thousand, fifty-three".