651161097 has 24 divisors (see below), whose sum is σ = 953405544. Its totient is φ = 428212224.

The previous prime is 651161087. The next prime is 651161143. The reversal of 651161097 is 790161156.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2134521 + 649026576 = 1461^2 + 25476^2 .

It is not a de Polignac number, because 651161097 - 2⁷ = 651160969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651161087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307113 + ... + 309225.

It is an arithmetic number, because the mean of its divisors is an integer number (39725231).

Almost surely, 2^651161097 is an apocalyptic number.

It is an amenable number.

651161097 is a deficient number, since it is larger than the sum of its proper divisors (302244447).

651161097 is a wasteful number, since it uses less digits than its factorization.

651161097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569 (or 2566 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 651161097 is about 25517.8583936819. The cubic root of 651161097 is about 866.7545870535.

The spelling of 651161097 in words is "six hundred fifty-one million, one hundred sixty-one thousand, ninety-seven".