612431551 has 2 divisors, whose sum is σ = 612431552. Its totient is φ = 612431550.

The previous prime is 612431543. The next prime is 612431569. The reversal of 612431551 is 155134216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612431551 - 2³ = 612431543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612441551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306215775 + 306215776.

It is an arithmetic number, because the mean of its divisors is an integer number (306215776).

Almost surely, 2^612431551 is an apocalyptic number.

612431551 is a deficient number, since it is larger than the sum of its proper divisors (1).

612431551 is an equidigital number, since it uses as much as digits as its factorization.

612431551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 612431551 is about 24747.3544242612. The cubic root of 612431551 is about 849.2179894117.

Adding to 612431551 its reverse (155134216), we get a palindrome (767565767).

It can be divided in two parts, 6124 and 31551, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 612431551 in words is "six hundred twelve million, four hundred thirty-one thousand, five hundred fifty-one".