542045520251 has 16 divisors (see below), whose sum is σ = 587821183488. Its totient is φ = 497914060800.

The previous prime is 542045520187. The next prime is 542045520271. The reversal of 542045520251 is 152025540245.

It is not a de Polignac number, because 542045520251 - 2⁶ = 542045520187 is a prime.

It is a super-4 number, since 4×542045520251⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542045520271) 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, 1402790 + ... + 1746971.

It is an arithmetic number, because the mean of its divisors is an integer number (36738823968).

Almost surely, 2^542045520251 is an apocalyptic number.

542045520251 is a deficient number, since it is larger than the sum of its proper divisors (45775663237).

542045520251 is a wasteful number, since it uses less digits than its factorization.

542045520251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150022.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 542045520251 in words is "five hundred forty-two billion, forty-five million, five hundred twenty thousand, two hundred fifty-one".