5121557 has 4 divisors (see below), whose sum is σ = 5853216. Its totient is φ = 4389900.

The previous prime is 5121553. The next prime is 5121559. The reversal of 5121557 is 7551215.

It is a happy number.

5121557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 5121557 - 2² = 5121553 is a prime.

It is a super-2 number, since 2×5121557² = 52460692208498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121551) 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, 365819 + ... + 365832.

It is an arithmetic number, because the mean of its divisors is an integer number (1463304).

Almost surely, 2^5121557 is an apocalyptic number.

It is an amenable number.

5121557 is a deficient number, since it is larger than the sum of its proper divisors (731659).

5121557 is an equidigital number, since it uses as much as digits as its factorization.

5121557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731658.

The product of its digits is 1750, while the sum is 26.

The square root of 5121557 is about 2263.0857252875. The cubic root of 5121557 is about 172.3722445507.

The spelling of 5121557 in words is "five million, one hundred twenty-one thousand, five hundred fifty-seven".