1055398 has 4 divisors (see below), whose sum is σ = 1583100. Its totient is φ = 527698.

The previous prime is 1055387. The next prime is 1055399. The reversal of 1055398 is 8935501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8935501 = 179 ⋅49919.

It is a super-2 number, since 2×1055398² = 2227729876808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263848 + ... + 263851.

It is an arithmetic number, because the mean of its divisors is an integer number (395775).

2^1055398 is an apocalyptic number.

1055398 is a deficient number, since it is larger than the sum of its proper divisors (527702).

1055398 is an equidigital number, since it uses as much as digits as its factorization.

1055398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527701.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1055398 is about 1027.3256543083. The cubic root of 1055398 is about 101.8135128985.

The spelling of 1055398 in words is "one million, fifty-five thousand, three hundred ninety-eight".