2155254534 has 16 divisors (see below), whose sum is σ = 4789454640. Its totient is φ = 718418160.

The previous prime is 2155254481. The next prime is 2155254547. The reversal of 2155254534 is 4354525512.

2155254534 is a `hidden beast` number, since 2 + 1 + 552 + 54 + 53 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19956007 + ... + 19956114.

It is an arithmetic number, because the mean of its divisors is an integer number (299340915).

Almost surely, 2^2155254534 is an apocalyptic number.

2155254534 is an abundant number, since it is smaller than the sum of its proper divisors (2634200106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155254534 is a wasteful number, since it uses less digits than its factorization.

2155254534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39912132 (or 39912126 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 2155254534 is about 46424.7189975341. The cubic root of 2155254534 is about 1291.7134720872.

The spelling of 2155254534 in words is "two billion, one hundred fifty-five million, two hundred fifty-four thousand, five hundred thirty-four".