11780057 has 4 divisors (see below), whose sum is σ = 12400080. Its totient is φ = 11160036.

The previous prime is 11780053. The next prime is 11780059. The reversal of 11780057 is 75008711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11780057 - 2² = 11780053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11780051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309983 + ... + 310020.

It is an arithmetic number, because the mean of its divisors is an integer number (3100020).

Almost surely, 2^11780057 is an apocalyptic number.

It is an amenable number.

11780057 is a deficient number, since it is larger than the sum of its proper divisors (620023).

11780057 is an equidigital number, since it uses as much as digits as its factorization.

11780057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620022.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 11780057 is about 3432.2087640468. The cubic root of 11780057 is about 227.5354821282.

Adding to 11780057 its reverse (75008711), we get a palindrome (86788768).

The spelling of 11780057 in words is "eleven million, seven hundred eighty thousand, fifty-seven".