654142051 has 4 divisors (see below), whose sum is σ = 688570600. Its totient is φ = 619713504.

The previous prime is 654142037. The next prime is 654142063. The reversal of 654142051 is 150241456.

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 654142051 - 2⁵ = 654142019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654142091) 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, 17214246 + ... + 17214283.

It is an arithmetic number, because the mean of its divisors is an integer number (172142650).

Almost surely, 2^654142051 is an apocalyptic number.

654142051 is a deficient number, since it is larger than the sum of its proper divisors (34428549).

654142051 is a wasteful number, since it uses less digits than its factorization.

654142051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34428548.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 654142051 is about 25576.2008711224. The cubic root of 654142051 is about 868.0752140753.

The spelling of 654142051 in words is "six hundred fifty-four million, one hundred forty-two thousand, fifty-one".