542625861 has 8 divisors (see below), whose sum is σ = 723681504. Its totient is φ = 361660400.

The previous prime is 542625851. The next prime is 542625911. The reversal of 542625861 is 168526245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542625861 - 2¹⁷ = 542494789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542625841) 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, 6966 + ... + 33671.

It is an arithmetic number, because the mean of its divisors is an integer number (90460188).

Almost surely, 2^542625861 is an apocalyptic number.

It is an amenable number.

542625861 is a deficient number, since it is larger than the sum of its proper divisors (181055643).

542625861 is a wasteful number, since it uses less digits than its factorization.

542625861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45091.

The product of its digits is 115200, while the sum is 39.

The square root of 542625861 is about 23294.3310914909. The cubic root of 542625861 is about 815.6430926067.

The spelling of 542625861 in words is "five hundred forty-two million, six hundred twenty-five thousand, eight hundred sixty-one".