2151254534 has 16 divisors (see below), whose sum is σ = 3791022480. Its totient is φ = 902624160.

The previous prime is 2151254533. The next prime is 2151254549. The reversal of 2151254534 is 4354521512.

It is a self number, because there is not a number n which added to its sum of digits gives 2151254534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151254533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3760649 + ... + 3761220.

It is an arithmetic number, because the mean of its divisors is an integer number (236938905).

Almost surely, 2^2151254534 is an apocalyptic number.

2151254534 is a deficient number, since it is larger than the sum of its proper divisors (1639767946).

2151254534 is a wasteful number, since it uses less digits than its factorization.

2151254534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521895.

The product of its digits is 24000, while the sum is 32.

The square root of 2151254534 is about 46381.6184926744. The cubic root of 2151254534 is about 1290.9138675943.

The spelling of 2151254534 in words is "two billion, one hundred fifty-one million, two hundred fifty-four thousand, five hundred thirty-four".