1090455 has 16 divisors (see below), whose sum is σ = 1760640. Its totient is φ = 576288.

The previous prime is 1090423. The next prime is 1090457. The reversal of 1090455 is 5540901.

1090455 = 465² + 466² + ... + 469².

It is not a de Polignac number, because 1090455 - 2⁵ = 1090423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090457) 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, 1824 + ... + 2346.

It is an arithmetic number, because the mean of its divisors is an integer number (110040).

2^1090455 is an apocalyptic number.

1090455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1090455 is a deficient number, since it is larger than the sum of its proper divisors (670185).

1090455 is a wasteful number, since it uses less digits than its factorization.

1090455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1090455 is about 1044.2485336356. The cubic root of 1090455 is about 102.9285645373.

The spelling of 1090455 in words is "one million, ninety thousand, four hundred fifty-five".