651255412 has 6 divisors (see below), whose sum is σ = 1139696978. Its totient is φ = 325627704.

The previous prime is 651255403. The next prime is 651255413. The reversal of 651255412 is 214552156.

It can be written as a sum of positive squares in only one way, i.e., 633226896 + 18028516 = 25164^2 + 4246^2 .

It is a super-2 number, since 2×651255412² = 848267223318579488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651255413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81406923 + ... + 81406930.

Almost surely, 2^651255412 is an apocalyptic number.

It is an amenable number.

651255412 is a deficient number, since it is larger than the sum of its proper divisors (488441566).

651255412 is a wasteful number, since it uses less digits than its factorization.

651255412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162813857 (or 162813855 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 651255412 is about 25519.7063462729. The cubic root of 651255412 is about 866.7964323115.

The spelling of 651255412 in words is "six hundred fifty-one million, two hundred fifty-five thousand, four hundred twelve".