2515455 has 20 divisors (see below), whose sum is σ = 4509912. Its totient is φ = 1341360.

The previous prime is 2515453. The next prime is 2515477. The reversal of 2515455 is 5545152.

It is a Cunningham number, because it is equal to 136³-1.

It is not a de Polignac number, because 2515455 - 2¹ = 2515453 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515451) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2701 + ... + 3510.

2^2515455 is an apocalyptic number.

2515455 is a deficient number, since it is larger than the sum of its proper divisors (1994457).

2515455 is an equidigital number, since it uses as much as digits as its factorization.

2515455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228 (or 6219 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 2515455 is about 1586.0186001431. The cubic root of 2515455 is about 135.9999819781. Note that the first 4 decimals are identical.

The spelling of 2515455 in words is "two million, five hundred fifteen thousand, four hundred fifty-five".