11390557 has 8 divisors (see below), whose sum is σ = 12022400. Its totient is φ = 10761984.

The previous prime is 11390551. The next prime is 11390573. The reversal of 11390557 is 75509311.

11390557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11390557 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390551) 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, 10444 + ... + 11482.

It is an arithmetic number, because the mean of its divisors is an integer number (1502800).

Almost surely, 2^11390557 is an apocalyptic number.

It is an amenable number.

11390557 is a deficient number, since it is larger than the sum of its proper divisors (631843).

11390557 is a wasteful number, since it uses less digits than its factorization.

11390557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 11390557 is about 3374.9899259109. The cubic root of 11390557 is about 224.9995522625. Note that the first 3 decimals are identical.

Adding to 11390557 its reverse (75509311), we get a palindrome (86899868).

The spelling of 11390557 in words is "eleven million, three hundred ninety thousand, five hundred fifty-seven".