654392157 has 4 divisors (see below), whose sum is σ = 872522880. Its totient is φ = 436261436.

The previous prime is 654392147. The next prime is 654392191. The reversal of 654392157 is 751293456.

654392157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 654392157 - 2¹¹ = 654390109 is a prime.

It is a super-2 number, since 2×654392157² = 856458190286225298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654392107) 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, 109065357 + ... + 109065362.

It is an arithmetic number, because the mean of its divisors is an integer number (218130720).

Almost surely, 2^654392157 is an apocalyptic number.

It is an amenable number.

654392157 is a deficient number, since it is larger than the sum of its proper divisors (218130723).

654392157 is a wasteful number, since it uses less digits than its factorization.

654392157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218130722.

The product of its digits is 226800, while the sum is 42.

The square root of 654392157 is about 25581.0898321397. The cubic root of 654392157 is about 868.1858338583.

The spelling of 654392157 in words is "six hundred fifty-four million, three hundred ninety-two thousand, one hundred fifty-seven".