654722051 has 4 divisors (see below), whose sum is σ = 656477712. Its totient is φ = 652966392.

The previous prime is 654722023. The next prime is 654722063. The reversal of 654722051 is 150227456.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654722051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654721999 and 654722017.

It is not an unprimeable number, because it can be changed into a prime (654722021) 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, 877271 + ... + 878016.

It is an arithmetic number, because the mean of its divisors is an integer number (164119428).

Almost surely, 2^654722051 is an apocalyptic number.

654722051 is a deficient number, since it is larger than the sum of its proper divisors (1755661).

654722051 is a wasteful number, since it uses less digits than its factorization.

654722051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755660.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 654722051 is about 25587.5370248877. The cubic root of 654722051 is about 868.3317001045.

The spelling of 654722051 in words is "six hundred fifty-four million, seven hundred twenty-two thousand, fifty-one".