11375531 has 2 divisors, whose sum is σ = 11375532. Its totient is φ = 11375530.

The previous prime is 11375489. The next prime is 11375557. The reversal of 11375531 is 13557311.

It is an a-pointer prime, because the next prime (11375557) can be obtained adding 11375531 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11375531 - 2⁶ = 11375467 is a prime.

It is a super-2 number, since 2×11375531² = 258805411063922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11375531.

It is not a weakly prime, because it can be changed into another prime (11372531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687765 + 5687766.

It is an arithmetic number, because the mean of its divisors is an integer number (5687766).

Almost surely, 2^11375531 is an apocalyptic number.

11375531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11375531 is an equidigital number, since it uses as much as digits as its factorization.

11375531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1575, while the sum is 26.

The square root of 11375531 is about 3372.7631105668. The cubic root of 11375531 is about 224.9005717066.

The spelling of 11375531 in words is "eleven million, three hundred seventy-five thousand, five hundred thirty-one".