2158552451 has 4 divisors (see below), whose sum is σ = 2354784504. Its totient is φ = 1962320400.

The previous prime is 2158552433. The next prime is 2158552453. The reversal of 2158552451 is 1542558512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2158552451 - 2⁶ = 2158552387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158552453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98116010 + ... + 98116031.

It is an arithmetic number, because the mean of its divisors is an integer number (588696126).

Almost surely, 2^2158552451 is an apocalyptic number.

2158552451 is a deficient number, since it is larger than the sum of its proper divisors (196232053).

2158552451 is a wasteful number, since it uses less digits than its factorization.

2158552451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196232052.

The product of its digits is 80000, while the sum is 38.

The square root of 2158552451 is about 46460.2243967891. The cubic root of 2158552451 is about 1292.3719856203.

The spelling of 2158552451 in words is "two billion, one hundred fifty-eight million, five hundred fifty-two thousand, four hundred fifty-one".