9975251 has 16 divisors (see below), whose sum is σ = 11880960. Its totient is φ = 8255520.

The previous prime is 9975223. The next prime is 9975253. The reversal of 9975251 is 1525799.

9975251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9975251 - 2⁶ = 9975187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9975253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10856 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^9975251 is an apocalyptic number.

9975251 is a deficient number, since it is larger than the sum of its proper divisors (1905709).

9975251 is a wasteful number, since it uses less digits than its factorization.

9975251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its digits is 28350, while the sum is 38.

The square root of 9975251 is about 3158.3620755069. The cubic root of 9975251 is about 215.2655884964.

The spelling of 9975251 in words is "nine million, nine hundred seventy-five thousand, two hundred fifty-one".