2154551015 has 8 divisors (see below), whose sum is σ = 2737547280. Its totient is φ = 1622250112.

The previous prime is 2154551011. The next prime is 2154551023. The reversal of 2154551015 is 5101554512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2154551015 - 2² = 2154551011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154551011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12673745 + ... + 12673914.

It is an arithmetic number, because the mean of its divisors is an integer number (342193410).

Almost surely, 2^2154551015 is an apocalyptic number.

2154551015 is a deficient number, since it is larger than the sum of its proper divisors (582996265).

2154551015 is a wasteful number, since it uses less digits than its factorization.

2154551015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25347681.

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 2154551015 is about 46417.1413919470. The cubic root of 2154551015 is about 1291.5729095920.

The spelling of 2154551015 in words is "two billion, one hundred fifty-four million, five hundred fifty-one thousand, fifteen".