2371521 has 8 divisors (see below), whose sum is σ = 3174784. Its totient is φ = 1574640.

The previous prime is 2371511. The next prime is 2371543. The reversal of 2371521 is 1251732.

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

It is not a de Polignac number, because 2371521 - 2⁵ = 2371489 is a prime.

It is a super-2 number, since 2×2371521² = 11248223706882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2371511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (396848).

2^2371521 is an apocalyptic number.

It is an amenable number.

2371521 is a deficient number, since it is larger than the sum of its proper divisors (803263).

2371521 is a wasteful number, since it uses less digits than its factorization.

2371521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191.

The product of its digits is 420, while the sum is 21.

The square root of 2371521 is about 1539.9743504357. The cubic root of 2371521 is about 133.3549041490.

The spelling of 2371521 in words is "two million, three hundred seventy-one thousand, five hundred twenty-one".