123461551 has 2 divisors, whose sum is σ = 123461552. Its totient is φ = 123461550.

The previous prime is 123461543. The next prime is 123461567. The reversal of 123461551 is 155164321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123461551 - 2³ = 123461543 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 (123461581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61730775 + 61730776.

It is an arithmetic number, because the mean of its divisors is an integer number (61730776).

Almost surely, 2^123461551 is an apocalyptic number.

123461551 is a deficient number, since it is larger than the sum of its proper divisors (1).

123461551 is an equidigital number, since it uses as much as digits as its factorization.

123461551 is an odious number, because the sum of its binary digits is odd.

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

The square root of 123461551 is about 11111.3253484902. The cubic root of 123461551 is about 497.9402612707.

The spelling of 123461551 in words is "one hundred twenty-three million, four hundred sixty-one thousand, five hundred fifty-one".