10645531 has 4 divisors (see below), whose sum is σ = 11464432. Its totient is φ = 9826632.

The previous prime is 10645511. The next prime is 10645541. The reversal of 10645531 is 13554601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13554601 = 59 ⋅229739.

It is a cyclic number.

It is not a de Polignac number, because 10645531 - 2⁷ = 10645403 is a prime.

It is a super-2 number, since 2×10645531² = 226654660543922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10645496 and 10645505.

It is not an unprimeable number, because it can be changed into a prime (10645511) 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, 409431 + ... + 409456.

It is an arithmetic number, because the mean of its divisors is an integer number (2866108).

Almost surely, 2^10645531 is an apocalyptic number.

10645531 is a deficient number, since it is larger than the sum of its proper divisors (818901).

10645531 is an equidigital number, since it uses as much as digits as its factorization.

10645531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818900.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 10645531 is about 3262.7489943298. The cubic root of 10645531 is about 219.9829945533.

The spelling of 10645531 in words is "ten million, six hundred forty-five thousand, five hundred thirty-one".