2155250339 has 4 divisors (see below), whose sum is σ = 2351182200. Its totient is φ = 1959318480.

The previous prime is 2155250311. The next prime is 2155250347. The reversal of 2155250339 is 9330525512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2155250339 - 2¹² = 2155246243 is a prime.

It is a super-2 number, since 2×2155250339² = 9290208047519229842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2155250299 and 2155250308.

It is not an unprimeable number, because it can be changed into a prime (2155250359) 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, 97965914 + ... + 97965935.

It is an arithmetic number, because the mean of its divisors is an integer number (587795550).

Almost surely, 2^2155250339 is an apocalyptic number.

2155250339 is a deficient number, since it is larger than the sum of its proper divisors (195931861).

2155250339 is a wasteful number, since it uses less digits than its factorization.

2155250339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195931860.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 2155250339 is about 46424.6738168401. The cubic root of 2155250339 is about 1291.7126340205.

The spelling of 2155250339 in words is "two billion, one hundred fifty-five million, two hundred fifty thousand, three hundred thirty-nine".