5621157 has 20 divisors (see below), whose sum is σ = 8690220. Its totient is φ = 3616704.

The previous prime is 5621117. The next prime is 5621159. The reversal of 5621157 is 7511265.

It can be written as a sum of positive squares in 2 ways, for example, as 1185921 + 4435236 = 1089^2 + 2106^2 .

It is not a de Polignac number, because 5621157 - 2⁷ = 5621029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 5621157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621159) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1153 + ... + 3545.

It is an arithmetic number, because the mean of its divisors is an integer number (434511).

Almost surely, 2^5621157 is an apocalyptic number.

It is an amenable number.

5621157 is a deficient number, since it is larger than the sum of its proper divisors (3069063).

5621157 is a wasteful number, since it uses less digits than its factorization.

5621157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2425 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 5621157 is about 2370.8979311645. The cubic root of 5621157 is about 177.8041548391.

It can be divided in two parts, 5621 and 157, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 5621157 in words is "five million, six hundred twenty-one thousand, one hundred fifty-seven".