15402461 has 2 divisors, whose sum is σ = 15402462. Its totient is φ = 15402460.

The previous prime is 15402421. The next prime is 15402469. The reversal of 15402461 is 16420451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14364100 + 1038361 = 3790^2 + 1019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15402461 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 (15402469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7701230 + 7701231.

It is an arithmetic number, because the mean of its divisors is an integer number (7701231).

Almost surely, 2^15402461 is an apocalyptic number.

It is an amenable number.

15402461 is a deficient number, since it is larger than the sum of its proper divisors (1).

15402461 is an equidigital number, since it uses as much as digits as its factorization.

15402461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 15402461 is about 3924.5969219781. The cubic root of 15402461 is about 248.8074456352.

The spelling of 15402461 in words is "fifteen million, four hundred two thousand, four hundred sixty-one".