2521357 has 8 divisors (see below), whose sum is σ = 2676960. Its totient is φ = 2368080.

The previous prime is 2521339. The next prime is 2521361. The reversal of 2521357 is 7531252.

2521357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521357 is a prime.

It is a super-2 number, since 2×2521357² = 12714482242898, which contains 22 as substring.

It is a Duffinian number.

2521357 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983 + ... + 2995.

It is an arithmetic number, because the mean of its divisors is an integer number (334620).

2^2521357 is an apocalyptic number.

It is an amenable number.

2521357 is a deficient number, since it is larger than the sum of its proper divisors (155603).

2521357 is a wasteful number, since it uses less digits than its factorization.

2521357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its digits is 2100, while the sum is 25.

The square root of 2521357 is about 1587.8781439393. The cubic root of 2521357 is about 136.1062642666.

The spelling of 2521357 in words is "two million, five hundred twenty-one thousand, three hundred fifty-seven".