15951461 has 2 divisors, whose sum is σ = 15951462. Its totient is φ = 15951460.

The previous prime is 15951451. The next prime is 15951473. The reversal of 15951461 is 16415951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15358561 + 592900 = 3919^2 + 770^2 .

It is a cyclic number.

It is not a de Polignac number, because 15951461 - 2¹⁴ = 15935077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15951401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7975730 + 7975731.

It is an arithmetic number, because the mean of its divisors is an integer number (7975731).

Almost surely, 2^15951461 is an apocalyptic number.

It is an amenable number.

15951461 is a deficient number, since it is larger than the sum of its proper divisors (1).

15951461 is an equidigital number, since it uses as much as digits as its factorization.

15951461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 32.

The square root of 15951461 is about 3993.9280163769. The cubic root of 15951461 is about 251.7291380860.

The spelling of 15951461 in words is "fifteen million, nine hundred fifty-one thousand, four hundred sixty-one".