1509955 has 4 divisors (see below), whose sum is σ = 1811952. Its totient is φ = 1207960.

The previous prime is 1509953. The next prime is 1509961. The reversal of 1509955 is 5599051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5599051 = 23 ⋅243437.

It is not a de Polignac number, because 1509955 - 2¹ = 1509953 is a prime.

It is a Duffinian number.

1509955 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1509955.

It is not an unprimeable number, because it can be changed into a prime (1509953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150991 + ... + 151000.

It is an arithmetic number, because the mean of its divisors is an integer number (452988).

2^1509955 is an apocalyptic number.

1509955 is a deficient number, since it is larger than the sum of its proper divisors (301997).

1509955 is an equidigital number, since it uses as much as digits as its factorization.

1509955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301996.

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 1509955 is about 1228.8022623677. The cubic root of 1509955 is about 114.7241023255.

The spelling of 1509955 in words is "one million, five hundred nine thousand, nine hundred fifty-five".