1959555 has 24 divisors (see below), whose sum is σ = 3399408. Its totient is φ = 963456.

The previous prime is 1959523. The next prime is 1959583. The reversal of 1959555 is 5559591.

It is a happy number.

It is not a de Polignac number, because 1959555 - 2⁵ = 1959523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2149 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (141642).

2^1959555 is an apocalyptic number.

1959555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1959555 is a deficient number, since it is larger than the sum of its proper divisors (1439853).

1959555 is a wasteful number, since it uses less digits than its factorization.

1959555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 794 counting only the distinct ones).

The product of its digits is 50625, while the sum is 39.

The square root of 1959555 is about 1399.8410624067. The cubic root of 1959555 is about 125.1370230759.

It can be divided in two parts, 195 and 9555, that multiplied together give a square (1863225 = 1365²).

The spelling of 1959555 in words is "one million, nine hundred fifty-nine thousand, five hundred fifty-five".