15961053 has 4 divisors (see below), whose sum is σ = 21281408. Its totient is φ = 10640700.

The previous prime is 15961039. The next prime is 15961067. The reversal of 15961053 is 35016951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35016951 = 3 ⋅11672317.

It is an interprime number because it is at equal distance from previous prime (15961039) and next prime (15961067).

It is not a de Polignac number, because 15961053 - 2⁴ = 15961037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15961053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15961073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2660173 + ... + 2660178.

It is an arithmetic number, because the mean of its divisors is an integer number (5320352).

Almost surely, 2^15961053 is an apocalyptic number.

It is an amenable number.

15961053 is a deficient number, since it is larger than the sum of its proper divisors (5320355).

15961053 is an equidigital number, since it uses as much as digits as its factorization.

15961053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320354.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 15961053 is about 3995.1286587543. The cubic root of 15961053 is about 251.7795849191.

The spelling of 15961053 in words is "fifteen million, nine hundred sixty-one thousand, fifty-three".