651274531 has 2 divisors, whose sum is σ = 651274532. Its totient is φ = 651274530.

The previous prime is 651274529. The next prime is 651274541. The reversal of 651274531 is 135472156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651274531 - 2¹ = 651274529 is a prime.

It is a super-2 number, since 2×651274531² = 848317029458539922, which contains 22 as substring.

Together with 651274529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (651274511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325637265 + 325637266.

It is an arithmetic number, because the mean of its divisors is an integer number (325637266).

Almost surely, 2^651274531 is an apocalyptic number.

651274531 is a deficient number, since it is larger than the sum of its proper divisors (1).

651274531 is an equidigital number, since it uses as much as digits as its factorization.

651274531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 651274531 is about 25520.0809363920. The cubic root of 651274531 is about 866.8049144516.

The spelling of 651274531 in words is "six hundred fifty-one million, two hundred seventy-four thousand, five hundred thirty-one".