2154004551 has 12 divisors (see below), whose sum is σ = 3218627880. Its totient is φ = 1386485520.

The previous prime is 2154004471. The next prime is 2154004561. The reversal of 2154004551 is 1554004512.

2154004551 is a `hidden beast` number, since 215 + 400 + 45 + 5 + 1 = 666.

It is not a de Polignac number, because 2154004551 - 2¹³ = 2153996359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154004561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4126185 + ... + 4126706.

It is an arithmetic number, because the mean of its divisors is an integer number (268218990).

Almost surely, 2^2154004551 is an apocalyptic number.

2154004551 is a deficient number, since it is larger than the sum of its proper divisors (1064623329).

2154004551 is a wasteful number, since it uses less digits than its factorization.

2154004551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252926 (or 8252923 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2154004551 is about 46411.2545725711. The cubic root of 2154004551 is about 1291.4637054356.

The spelling of 2154004551 in words is "two billion, one hundred fifty-four million, four thousand, five hundred fifty-one".