1501215 has 16 divisors (see below), whose sum is σ = 2461536. Its totient is φ = 780800.

The previous prime is 1501207. The next prime is 1501217. The reversal of 1501215 is 5121051.

It is not a de Polignac number, because 1501215 - 2³ = 1501207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1501194 and 1501203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (153846).

2^1501215 is an apocalyptic number.

1501215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1501215 is a deficient number, since it is larger than the sum of its proper divisors (960321).

1501215 is a wasteful number, since it uses less digits than its factorization.

1501215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490.

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

The square root of 1501215 is about 1225.2407926608. The cubic root of 1501215 is about 114.5023231987.

Adding to 1501215 its reverse (5121051), we get a palindrome (6622266).

The spelling of 1501215 in words is "one million, five hundred one thousand, two hundred fifteen".