2507961 has 4 divisors (see below), whose sum is σ = 3343952. Its totient is φ = 1671972.

The previous prime is 2507957. The next prime is 2507963. The reversal of 2507961 is 1697052.

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.

It is not a de Polignac number, because 2507961 - 2² = 2507957 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2507963) 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, 417991 + ... + 417996.

It is an arithmetic number, because the mean of its divisors is an integer number (835988).

2^2507961 is an apocalyptic number.

It is an amenable number.

2507961 is a deficient number, since it is larger than the sum of its proper divisors (835991).

2507961 is an equidigital number, since it uses as much as digits as its factorization.

2507961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835990.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2507961 is about 1583.6543183410. The cubic root of 2507961 is about 135.8647913724.

The spelling of 2507961 in words is "two million, five hundred seven thousand, nine hundred sixty-one".