542155810 has 32 divisors (see below), whose sum is σ = 1139028480. Its totient is φ = 181925952.

The previous prime is 542155777. The next prime is 542155811. The reversal of 542155810 is 18551245.

It is a super-2 number, since 2×542155810² = 587865844633512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (542155811) 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, 79105 + ... + 85684.

It is an arithmetic number, because the mean of its divisors is an integer number (35594640).

Almost surely, 2^542155810 is an apocalyptic number.

542155810 is an abundant number, since it is smaller than the sum of its proper divisors (596872670).

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

542155810 is a wasteful number, since it uses less digits than its factorization.

542155810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164850.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 542155810 is about 23284.2395194690. The cubic root of 542155810 is about 815.4075069497.

It can be divided in two parts, 54215 and 5810, that added together give a square (60025 = 245²).

The spelling of 542155810 in words is "five hundred forty-two million, one hundred fifty-five thousand, eight hundred ten".