2015154 has 12 divisors (see below), whose sum is σ = 4366206. Its totient is φ = 671712.

The previous prime is 2015149. The next prime is 2015161. The reversal of 2015154 is 4515102.

It can be written as a sum of positive squares in only one way, i.e., 1896129 + 119025 = 1377^2 + 345^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 111953 = 2015154 / (2 + 0 + 1 + 5 + 1 + 5 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55959 + ... + 55994.

2^2015154 is an apocalyptic number.

2015154 is an abundant number, since it is smaller than the sum of its proper divisors (2351052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2015154 is a wasteful number, since it uses less digits than its factorization.

2015154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111961 (or 111958 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2015154 is about 1419.5611998079. The cubic root of 2015154 is about 126.3095187128.

The spelling of 2015154 in words is "two million, fifteen thousand, one hundred fifty-four".