11375551 has 8 divisors (see below), whose sum is σ = 12674304. Its totient is φ = 10120920.

The previous prime is 11375531. The next prime is 11375557. The reversal of 11375551 is 15557311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11375551 - 2¹¹ = 11373503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11375557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10485 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (1584288).

Almost surely, 2^11375551 is an apocalyptic number.

11375551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11375551 is a deficient number, since it is larger than the sum of its proper divisors (1298753).

11375551 is a wasteful number, since it uses less digits than its factorization.

11375551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22061.

The product of its digits is 2625, while the sum is 28.

The square root of 11375551 is about 3372.7660754935. The cubic root of 11375551 is about 224.9007035102.

The spelling of 11375551 in words is "eleven million, three hundred seventy-five thousand, five hundred fifty-one".