2015454 has 32 divisors (see below), whose sum is σ = 4709376. Its totient is φ = 563040.

The previous prime is 2015443. The next prime is 2015473. The reversal of 2015454 is 4545102.

2015454 = T₄₂ + T₄₃ + ... + T₂₂₉.

It is a super-2 number, since 2×2015454² = 8124109652232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2015454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1464 + ... + 2484.

It is an arithmetic number, because the mean of its divisors is an integer number (147168).

2^2015454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354688).

2015454 is an abundant number, since it is smaller than the sum of its proper divisors (2693922).

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

2015454 is a wasteful number, since it uses less digits than its factorization.

2015454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2015454 is about 1419.6668623307. Note that the first 3 decimals coincide. The cubic root of 2015454 is about 126.3157863852.

The spelling of 2015454 in words is "two million, fifteen thousand, four hundred fifty-four".