542644461 has 16 divisors (see below), whose sum is σ = 804661120. Its totient is φ = 361428480.

The previous prime is 542644447. The next prime is 542644511. The reversal of 542644461 is 164446245.

542644461 is a `hidden beast` number, since 5 + 4 + 2 + 644 + 4 + 6 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-542644461 is a prime.

It is a super-2 number, since 2×542644461² = 588926022107961042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542644261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22416 + ... + 39846.

It is an arithmetic number, because the mean of its divisors is an integer number (50291320).

Almost surely, 2^542644461 is an apocalyptic number.

It is an amenable number.

542644461 is a deficient number, since it is larger than the sum of its proper divisors (262016659).

542644461 is a wasteful number, since it uses less digits than its factorization.

542644461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18593 (or 18587 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 542644461 is about 23294.7303268357. The cubic root of 542644461 is about 815.6524119734.

The spelling of 542644461 in words is "five hundred forty-two million, six hundred forty-four thousand, four hundred sixty-one".