15612461 has 2 divisors, whose sum is σ = 15612462. Its totient is φ = 15612460.

The previous prime is 15612427. The next prime is 15612463. The reversal of 15612461 is 16421651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 2788900 = 3581^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 15612461 - 2²² = 11418157 is a prime.

Together with 15612463, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15612461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15612463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7806230 + 7806231.

It is an arithmetic number, because the mean of its divisors is an integer number (7806231).

Almost surely, 2^15612461 is an apocalyptic number.

It is an amenable number.

15612461 is a deficient number, since it is larger than the sum of its proper divisors (1).

15612461 is an equidigital number, since it uses as much as digits as its factorization.

15612461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 15612461 is about 3951.2606848954. The cubic root of 15612461 is about 249.9331074365.

The spelling of 15612461 in words is "fifteen million, six hundred twelve thousand, four hundred sixty-one".