2151254533 has 2 divisors, whose sum is σ = 2151254534. Its totient is φ = 2151254532.

The previous prime is 2151254513. The next prime is 2151254549. The reversal of 2151254533 is 3354521512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1472026689 + 679227844 = 38367^2 + 26062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151254533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151254495 and 2151254504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151254513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075627266 + 1075627267.

It is an arithmetic number, because the mean of its divisors is an integer number (1075627267).

Almost surely, 2^2151254533 is an apocalyptic number.

It is an amenable number.

2151254533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151254533 is an equidigital number, since it uses as much as digits as its factorization.

2151254533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 31.

The square root of 2151254533 is about 46381.6184818943. The cubic root of 2151254533 is about 1290.9138673942.

The spelling of 2151254533 in words is "two billion, one hundred fifty-one million, two hundred fifty-four thousand, five hundred thirty-three".