2154511550 has 24 divisors (see below), whose sum is σ = 4010601936. Its totient is φ = 861114240.

The previous prime is 2154511547. The next prime is 2154511559. The reversal of 2154511550 is 551154512.

2154511550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154511559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48239 + ... + 81461.

It is an arithmetic number, because the mean of its divisors is an integer number (167108414).

Almost surely, 2^2154511550 is an apocalyptic number.

2154511550 is a deficient number, since it is larger than the sum of its proper divisors (1856090386).

2154511550 is a wasteful number, since it uses less digits than its factorization.

2154511550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34532 (or 34527 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 2154511550 is about 46416.7162776515. The cubic root of 2154511550 is about 1291.5650236124.

The spelling of 2154511550 in words is "two billion, one hundred fifty-four million, five hundred eleven thousand, five hundred fifty".