11970157 has 2 divisors, whose sum is σ = 11970158. Its totient is φ = 11970156.

The previous prime is 11970121. The next prime is 11970169. The reversal of 11970157 is 75107911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 5476 = 3459^2 + 74^2 .

It is an emirp because it is prime and its reverse (75107911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11970157 - 2²³ = 3581549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11970757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5985078 + 5985079.

It is an arithmetic number, because the mean of its divisors is an integer number (5985079).

Almost surely, 2^11970157 is an apocalyptic number.

It is an amenable number.

11970157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11970157 is an equidigital number, since it uses as much as digits as its factorization.

11970157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205, while the sum is 31.

The square root of 11970157 is about 3459.7914677044. The cubic root of 11970157 is about 228.7529037027.

The spelling of 11970157 in words is "eleven million, nine hundred seventy thousand, one hundred fifty-seven".