2501655 has 16 divisors (see below), whose sum is σ = 4310880. Its totient is φ = 1231488.

The previous prime is 2501651. The next prime is 2501657. The reversal of 2501655 is 5561052.

It is not a de Polignac number, because 2501655 - 2² = 2501651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501651) 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, 6220 + ... + 6609.

It is an arithmetic number, because the mean of its divisors is an integer number (269430).

2^2501655 is an apocalyptic number.

2501655 is a deficient number, since it is larger than the sum of its proper divisors (1809225).

2501655 is a wasteful number, since it uses less digits than its factorization.

2501655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2501655 is about 1581.6621004500. The cubic root of 2501655 is about 135.7508232978.

The spelling of 2501655 in words is "two million, five hundred one thousand, six hundred fifty-five".