2153901 has 4 divisors (see below), whose sum is σ = 2871872. Its totient is φ = 1435932.

The previous prime is 2153891. The next prime is 2153903. The reversal of 2153901 is 1093512.

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 not a de Polignac number, because 2153901 - 2⁷ = 2153773 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153903) 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, 358981 + ... + 358986.

It is an arithmetic number, because the mean of its divisors is an integer number (717968).

2^2153901 is an apocalyptic number.

It is an amenable number.

2153901 is a deficient number, since it is larger than the sum of its proper divisors (717971).

2153901 is an equidigital number, since it uses as much as digits as its factorization.

2153901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717970.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 2153901 is about 1467.6174569689. The cubic root of 2153901 is about 129.1443009951.

The spelling of 2153901 in words is "two million, one hundred fifty-three thousand, nine hundred one".