2621157 has 24 divisors (see below), whose sum is σ = 4437792. Its totient is φ = 1360800.

The previous prime is 2621147. The next prime is 2621159. The reversal of 2621157 is 7511262.

It is not a de Polignac number, because 2621157 - 2⁸ = 2620901 is a prime.

2621157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807 + ... + 2427.

It is an arithmetic number, because the mean of its divisors is an integer number (184908).

2^2621157 is an apocalyptic number.

It is an amenable number.

2621157 is a deficient number, since it is larger than the sum of its proper divisors (1816635).

2621157 is a wasteful number, since it uses less digits than its factorization.

2621157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1642 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 2621157 is about 1618.9987646691. The cubic root of 2621157 is about 137.8788581913.

The spelling of 2621157 in words is "two million, six hundred twenty-one thousand, one hundred fifty-seven".