542577644 has 24 divisors (see below), whose sum is σ = 1148988960. Its totient is φ = 218854656.

The previous prime is 542577631. The next prime is 542577647. The reversal of 542577644 is 446775245.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 542577595 and 542577604.

It is not an unprimeable number, because it can be changed into a prime (542577647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569459 + ... + 570410.

It is an arithmetic number, because the mean of its divisors is an integer number (47874540).

Almost surely, 2^542577644 is an apocalyptic number.

It is an amenable number.

542577644 is an abundant number, since it is smaller than the sum of its proper divisors (606411316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542577644 is a wasteful number, since it uses less digits than its factorization.

542577644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139897 (or 1139895 counting only the distinct ones).

The product of its digits is 940800, while the sum is 44.

The square root of 542577644 is about 23293.2961171235. The cubic root of 542577644 is about 815.6189329104.

The spelling of 542577644 in words is "five hundred forty-two million, five hundred seventy-seven thousand, six hundred forty-four".