2251040155 has 24 divisors (see below), whose sum is σ = 3383986032. Its totient is φ = 1424832192.

The previous prime is 2251040123. The next prime is 2251040237. The reversal of 2251040155 is 5510401522.

It is not a de Polignac number, because 2251040155 - 2⁵ = 2251040123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350197 + ... + 356566.

It is an arithmetic number, because the mean of its divisors is an integer number (140999418).

Almost surely, 2^2251040155 is an apocalyptic number.

2251040155 is a deficient number, since it is larger than the sum of its proper divisors (1132945877).

2251040155 is a wasteful number, since it uses less digits than its factorization.

2251040155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706795 (or 706788 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2251040155 is about 47445.1278320546. The cubic root of 2251040155 is about 1310.5725902384.

Adding to 2251040155 its reverse (5510401522), we get a palindrome (7761441677).

The spelling of 2251040155 in words is "two billion, two hundred fifty-one million, forty thousand, one hundred fifty-five".