651164545 has 4 divisors (see below), whose sum is σ = 781397460. Its totient is φ = 520931632.

The previous prime is 651164539. The next prime is 651164573. The reversal of 651164545 is 545461156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 491420224 + 159744321 = 22168^2 + 12639^2 .

It is a cyclic number.

It is not a de Polignac number, because 651164545 - 2³ = 651164537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65116450 + ... + 65116459.

It is an arithmetic number, because the mean of its divisors is an integer number (195349365).

Almost surely, 2^651164545 is an apocalyptic number.

It is an amenable number.

651164545 is a deficient number, since it is larger than the sum of its proper divisors (130232915).

651164545 is a wasteful number, since it uses less digits than its factorization.

651164545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130232914.

The product of its digits is 72000, while the sum is 37.

The square root of 651164545 is about 25517.9259541210. The cubic root of 651164545 is about 866.7561169179.

The spelling of 651164545 in words is "six hundred fifty-one million, one hundred sixty-four thousand, five hundred forty-five".