72541549 has 4 divisors (see below), whose sum is σ = 72559264. Its totient is φ = 72523836.

The previous prime is 72541541. The next prime is 72541619. The reversal of 72541549 is 94514527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72541549 - 2³ = 72541541 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 (72541541) 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, 784 + ... + 12070.

It is an arithmetic number, because the mean of its divisors is an integer number (18139816).

Almost surely, 2^72541549 is an apocalyptic number.

It is an amenable number.

72541549 is a deficient number, since it is larger than the sum of its proper divisors (17715).

72541549 is a wasteful number, since it uses less digits than its factorization.

72541549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17714.

The product of its digits is 50400, while the sum is 37.

The square root of 72541549 is about 8517.1326747914. The cubic root of 72541549 is about 417.0571857311.

The spelling of 72541549 in words is "seventy-two million, five hundred forty-one thousand, five hundred forty-nine".