11930557 has 2 divisors, whose sum is σ = 11930558. Its totient is φ = 11930556.

The previous prime is 11930551. The next prime is 11930561. The reversal of 11930557 is 75503911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11930116 + 441 = 3454^2 + 21^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11930557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11930551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5965278 + 5965279.

It is an arithmetic number, because the mean of its divisors is an integer number (5965279).

Almost surely, 2^11930557 is an apocalyptic number.

It is an amenable number.

11930557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11930557 is an equidigital number, since it uses as much as digits as its factorization.

11930557 is an evil number, because the sum of its binary digits is even.

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

The square root of 11930557 is about 3454.0638384373. The cubic root of 11930557 is about 228.5003694849.

The spelling of 11930557 in words is "eleven million, nine hundred thirty thousand, five hundred fifty-seven".