10557091 has 4 divisors (see below), whose sum is σ = 10675800. Its totient is φ = 10438384.

The previous prime is 10557067. The next prime is 10557101. The reversal of 10557091 is 19075501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19075501 = 647 ⋅29483.

It is a cyclic number.

It is not a de Polignac number, because 10557091 - 2¹⁷ = 10426019 is a prime.

It is a super-2 number, since 2×10557091² = 222904340764562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10557031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59221 + ... + 59398.

It is an arithmetic number, because the mean of its divisors is an integer number (2668950).

Almost surely, 2^10557091 is an apocalyptic number.

10557091 is a deficient number, since it is larger than the sum of its proper divisors (118709).

10557091 is an equidigital number, since it uses as much as digits as its factorization.

10557091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118708.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 10557091 is about 3249.1677395912. The cubic root of 10557091 is about 219.3721146635.

The spelling of 10557091 in words is "ten million, five hundred fifty-seven thousand, ninety-one".