2015342451 has 20 divisors (see below), whose sum is σ = 3025726000. Its totient is φ = 1336799376.

The previous prime is 2015342411. The next prime is 2015342453. The reversal of 2015342451 is 1542435102.

2015342451 is a `hidden beast` number, since 20 + 153 + 42 + 451 = 666.

It is not a de Polignac number, because 2015342451 - 2¹⁷ = 2015211379 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015342453) 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, 46396 + ... + 78633.

It is an arithmetic number, because the mean of its divisors is an integer number (151286300).

Almost surely, 2^2015342451 is an apocalyptic number.

2015342451 is a deficient number, since it is larger than the sum of its proper divisors (1010383549).

2015342451 is a wasteful number, since it uses less digits than its factorization.

2015342451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125240 (or 125231 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2015342451 is about 44892.5656540145. The cubic root of 2015342451 is about 1263.1345594924.

Adding to 2015342451 its reverse (1542435102), we get a palindrome (3557777553).

The spelling of 2015342451 in words is "two billion, fifteen million, three hundred forty-two thousand, four hundred fifty-one".