15850961 has 12 divisors (see below), whose sum is σ = 18870192. Its totient is φ = 13268808.

The previous prime is 15850957. The next prime is 15850981. The reversal of 15850961 is 16905851.

It is not a de Polignac number, because 15850961 - 2² = 15850957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15850981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655 + ... + 5868.

It is an arithmetic number, because the mean of its divisors is an integer number (1572516).

Almost surely, 2^15850961 is an apocalyptic number.

It is an amenable number.

15850961 is a deficient number, since it is larger than the sum of its proper divisors (3019231).

15850961 is an equidigital number, since it uses as much as digits as its factorization.

15850961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580 (or 7573 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 15850961 is about 3981.3265377258. The cubic root of 15850961 is about 251.1993622528.

The spelling of 15850961 in words is "fifteen million, eight hundred fifty thousand, nine hundred sixty-one".