10557405 has 16 divisors (see below), whose sum is σ = 18768960. Its totient is φ = 5630544.

The previous prime is 10557373. The next prime is 10557409. The reversal of 10557405 is 50475501.

It is not a de Polignac number, because 10557405 - 2⁵ = 10557373 is a prime.

It is a super-2 number, since 2×10557405² = 222917600668050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10557409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38967 + ... + 39236.

It is an arithmetic number, because the mean of its divisors is an integer number (1173060).

Almost surely, 2^10557405 is an apocalyptic number.

10557405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10557405 is a deficient number, since it is larger than the sum of its proper divisors (8211555).

10557405 is an equidigital number, since it uses as much as digits as its factorization.

10557405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78217 (or 78211 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 10557405 is about 3249.2160592980. The cubic root of 10557405 is about 219.3742895733.

The spelling of 10557405 in words is "ten million, five hundred fifty-seven thousand, four hundred five".