54721611 has 24 divisors (see below), whose sum is σ = 90752480. Its totient is φ = 31124736.

The previous prime is 54721573. The next prime is 54721613. The reversal of 54721611 is 11612745.

It is a happy number.

54721611 is a `hidden beast` number, since 5 + 47 + 2 + 1 + 611 = 666.

It is not a de Polignac number, because 54721611 - 2⁶ = 54721547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54721613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12531 + ... + 16323.

Almost surely, 2^54721611 is an apocalyptic number.

54721611 is a deficient number, since it is larger than the sum of its proper divisors (36030869).

54721611 is a wasteful number, since it uses less digits than its factorization.

54721611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035 (or 4032 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 54721611 is about 7397.4056938903. The cubic root of 54721611 is about 379.6525240047.

The spelling of 54721611 in words is "fifty-four million, seven hundred twenty-one thousand, six hundred eleven".