1097775 has 72 divisors (see below), whose sum is σ = 2437344. Its totient is φ = 460800.

The previous prime is 1097743. The next prime is 1097783. The reversal of 1097775 is 5777901.

It is not a de Polignac number, because 1097775 - 2⁵ = 1097743 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26755 + ... + 26795.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2^1097775 is an apocalyptic number.

1097775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1097775 is an abundant number, since it is smaller than the sum of its proper divisors (1339569).

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

1097775 is a wasteful number, since it uses less digits than its factorization.

1097775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 15435, while the sum is 36.

The square root of 1097775 is about 1047.7475841060. The cubic root of 1097775 is about 103.1583638603.

The spelling of 1097775 in words is "one million, ninety-seven thousand, seven hundred seventy-five".