1055399810 has 16 divisors (see below), whose sum is σ = 1900092600. Its totient is φ = 422077056.

The previous prime is 1055399767. The next prime is 1055399887. The reversal of 1055399810 is 189935501.

It can be written as a sum of positive squares in 4 ways, for example, as 988536481 + 66863329 = 31441^2 + 8177^2 .

It is a super-2 number, since 2×1055399810² = 2227737517896072200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84446 + ... + 96134.

Almost surely, 2^1055399810 is an apocalyptic number.

1055399810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055399810 is a deficient number, since it is larger than the sum of its proper divisors (844692790).

1055399810 is a wasteful number, since it uses less digits than its factorization.

1055399810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20725.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 1055399810 is about 32486.9175207498. The cubic root of 1055399810 is about 1018.1357110165.

The spelling of 1055399810 in words is "one billion, fifty-five million, three hundred ninety-nine thousand, eight hundred ten".