15515130 has 32 divisors (see below), whose sum is σ = 37350144. Its totient is φ = 4124736.

The previous prime is 15515119. The next prime is 15515147. The reversal of 15515130 is 3151551.

It is a junction number, because it is equal to n+sod(n) for n = 15515097 and 15515106.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13332 + ... + 14448.

It is an arithmetic number, because the mean of its divisors is an integer number (1167192).

Almost surely, 2^15515130 is an apocalyptic number.

15515130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15515130 is an abundant number, since it is smaller than the sum of its proper divisors (21835014).

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

15515130 is a wasteful number, since it uses less digits than its factorization.

15515130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 15515130 is about 3938.9249802452. The cubic root of 15515130 is about 249.4126478170.

Adding to 15515130 its reverse (3151551), we get a palindrome (18666681).

The spelling of 15515130 in words is "fifteen million, five hundred fifteen thousand, one hundred thirty".