72754561 has 8 divisors (see below), whose sum is σ = 79857504. Its totient is φ = 65733120.

The previous prime is 72754523. The next prime is 72754567. The reversal of 72754561 is 16545727.

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 72754561 - 2¹¹ = 72752513 is a prime.

It is a super-2 number, since 2×72754561² = 10586452292605442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72754561.

It is not an unprimeable number, because it can be changed into a prime (72754567) 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, 18496 + ... + 22081.

It is an arithmetic number, because the mean of its divisors is an integer number (9982188).

Almost surely, 2^72754561 is an apocalyptic number.

It is an amenable number.

72754561 is a deficient number, since it is larger than the sum of its proper divisors (7102943).

72754561 is a wasteful number, since it uses less digits than its factorization.

72754561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40751.

The product of its digits is 58800, while the sum is 37.

The square root of 72754561 is about 8529.6284209806. The cubic root of 72754561 is about 417.4650042977.

The spelling of 72754561 in words is "seventy-two million, seven hundred fifty-four thousand, five hundred sixty-one".