1355172 has 96 divisors (see below), whose sum is σ = 4177152. Its totient is φ = 331776.

The previous prime is 1355153. The next prime is 1355191. The reversal of 1355172 is 2715531.

It is an interprime number because it is at equal distance from previous prime (1355153) and next prime (1355191).

It is a super-2 number, since 2×1355172² = 3672982299168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18528 + ... + 18600.

It is an arithmetic number, because the mean of its divisors is an integer number (43512).

2^1355172 is an apocalyptic number.

1355172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088576).

1355172 is an abundant number, since it is smaller than the sum of its proper divisors (2821980).

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

1355172 is a wasteful number, since it uses less digits than its factorization.

1355172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 115 counting only the distinct ones).

The product of its digits is 1050, while the sum is 24.

The square root of 1355172 is about 1164.1185506640. The cubic root of 1355172 is about 110.6619044418.

The spelling of 1355172 in words is "one million, three hundred fifty-five thousand, one hundred seventy-two".