2154254551 has 16 divisors (see below), whose sum is σ = 2229638400. Its totient is φ = 2080349568.

The previous prime is 2154254539. The next prime is 2154254587. The reversal of 2154254551 is 1554524512.

It is a cyclic number.

It is not a de Polignac number, because 2154254551 - 2⁷ = 2154254423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154254591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2343670 + ... + 2344588.

It is an arithmetic number, because the mean of its divisors is an integer number (139352400).

Almost surely, 2^2154254551 is an apocalyptic number.

2154254551 is a deficient number, since it is larger than the sum of its proper divisors (75383849).

2154254551 is an equidigital number, since it uses as much as digits as its factorization.

2154254551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638.

The product of its digits is 40000, while the sum is 34.

The square root of 2154254551 is about 46413.9478066669. The cubic root of 2154254551 is about 1291.5136671741.

The spelling of 2154254551 in words is "two billion, one hundred fifty-four million, two hundred fifty-four thousand, five hundred fifty-one".