54393561 has 36 divisors (see below), whose sum is σ = 85715760. Its totient is φ = 33145200.

The previous prime is 54393533. The next prime is 54393571. The reversal of 54393561 is 16539345.

54393561 is a `hidden beast` number, since 5 + 4 + 3 + 93 + 561 = 666.

It is not a de Polignac number, because 54393561 - 2⁶ = 54393497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54393571) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 164166 + ... + 164496.

Almost surely, 2^54393561 is an apocalyptic number.

It is an amenable number.

54393561 is a deficient number, since it is larger than the sum of its proper divisors (31322199).

54393561 is a wasteful number, since it uses less digits than its factorization.

54393561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 384 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 54393561 is about 7375.1990481613. The cubic root of 54393561 is about 378.8923446272.

The spelling of 54393561 in words is "fifty-four million, three hundred ninety-three thousand, five hundred sixty-one".