72522455 has 8 divisors (see below), whose sum is σ = 87085152. Its totient is φ = 57979168.

The previous prime is 72522433. The next prime is 72522469. The reversal of 72522455 is 55422527.

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

It is a cyclic number.

It is not a de Polignac number, because 72522455 - 2¹⁶ = 72456919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5309 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (10885644).

Almost surely, 2^72522455 is an apocalyptic number.

72522455 is a deficient number, since it is larger than the sum of its proper divisors (14562697).

72522455 is a wasteful number, since it uses less digits than its factorization.

72522455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705.

The product of its digits is 28000, while the sum is 32.

The square root of 72522455 is about 8516.0116838811. The cubic root of 72522455 is about 417.0205906634.

The spelling of 72522455 in words is "seventy-two million, five hundred twenty-two thousand, four hundred fifty-five".