654641051 has 4 divisors (see below), whose sum is σ = 668569632. Its totient is φ = 640712472.

The previous prime is 654641033. The next prime is 654641063. The reversal of 654641051 is 150146456.

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 654641051 - 2¹⁰ = 654640027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654640999 and 654641017.

It is not an unprimeable number, because it can be changed into a prime (654641951) 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, 6964220 + ... + 6964313.

It is an arithmetic number, because the mean of its divisors is an integer number (167142408).

Almost surely, 2^654641051 is an apocalyptic number.

654641051 is a deficient number, since it is larger than the sum of its proper divisors (13928581).

654641051 is a wasteful number, since it uses less digits than its factorization.

654641051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13928580.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 654641051 is about 25585.9541741167. The cubic root of 654641051 is about 868.2958896063.

The spelling of 654641051 in words is "six hundred fifty-four million, six hundred forty-one thousand, fifty-one".