7961251 has 4 divisors (see below), whose sum is σ = 8034400. Its totient is φ = 7888104.

The previous prime is 7961231. The next prime is 7961267. The reversal of 7961251 is 1521697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7961251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7961231) 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, 36411 + ... + 36628.

It is an arithmetic number, because the mean of its divisors is an integer number (2008600).

Almost surely, 2^7961251 is an apocalyptic number.

7961251 is a deficient number, since it is larger than the sum of its proper divisors (73149).

7961251 is a wasteful number, since it uses less digits than its factorization.

7961251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73148.

The product of its digits is 3780, while the sum is 31.

The square root of 7961251 is about 2821.5688898200. The cubic root of 7961251 is about 199.6765689103.

The spelling of 7961251 in words is "seven million, nine hundred sixty-one thousand, two hundred fifty-one".