542648961 has 6 divisors (see below), whose sum is σ = 783826290. Its totient is φ = 361765968.

The previous prime is 542648947. The next prime is 542648969. The reversal of 542648961 is 169846245.

542648961 is a `hidden beast` number, since 542 + 6 + 48 + 9 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 541958400 + 690561 = 23280^2 + 831^2 .

It is not a de Polignac number, because 542648961 - 2⁷ = 542648833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542648969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30147156 + ... + 30147173.

It is an arithmetic number, because the mean of its divisors is an integer number (130637715).

Almost surely, 2^542648961 is an apocalyptic number.

It is an amenable number.

542648961 is a deficient number, since it is larger than the sum of its proper divisors (241177329).

542648961 is a wasteful number, since it uses less digits than its factorization.

542648961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60294335 (or 60294332 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 542648961 is about 23294.8269150041. The cubic root of 542648961 is about 815.6546666269.

The spelling of 542648961 in words is "five hundred forty-two million, six hundred forty-eight thousand, nine hundred sixty-one".