542666051 has 4 divisors (see below), whose sum is σ = 542850000. Its totient is φ = 542482104.

The previous prime is 542666041. The next prime is 542666057. The reversal of 542666051 is 150666245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542666051 - 2⁶ = 542665987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542666057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87476 + ... + 93473.

It is an arithmetic number, because the mean of its divisors is an integer number (135712500).

Almost surely, 2^542666051 is an apocalyptic number.

542666051 is a deficient number, since it is larger than the sum of its proper divisors (183949).

542666051 is a wasteful number, since it uses less digits than its factorization.

542666051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183948.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 542666051 is about 23295.1937317551. The cubic root of 542666051 is about 815.6632291863.

The spelling of 542666051 in words is "five hundred forty-two million, six hundred sixty-six thousand, fifty-one".