1520115 has 8 divisors (see below), whose sum is σ = 2432208. Its totient is φ = 810720.

The previous prime is 1520107. The next prime is 1520131. The reversal of 1520115 is 5110251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1520115 - 2³ = 1520107 is a prime.

It is a super-2 number, since 2×1520115² = 4621499226450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 101341 = 1520115 / (1 + 5 + 2 + 0 + 1 + 1 + 5).

1520115 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1520094 and 1520103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50656 + ... + 50685.

It is an arithmetic number, because the mean of its divisors is an integer number (304026).

2^1520115 is an apocalyptic number.

1520115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1520115 is a deficient number, since it is larger than the sum of its proper divisors (912093).

1520115 is a wasteful number, since it uses less digits than its factorization.

1520115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101349.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1520115 is about 1232.9294383703. The cubic root of 1520115 is about 114.9808411688.

Adding to 1520115 its reverse (5110251), we get a palindrome (6630366).

The spelling of 1520115 in words is "one million, five hundred twenty thousand, one hundred fifteen".