214815157 has 2 divisors, whose sum is σ = 214815158. Its totient is φ = 214815156.

The previous prime is 214815149. The next prime is 214815163. The reversal of 214815157 is 751518412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151437636 + 63377521 = 12306^2 + 7961^2 .

It is a cyclic number.

It is not a de Polignac number, because 214815157 - 2³ = 214815149 is a prime.

It is a super-2 number, since 2×214815157² = 92291103353869298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214815857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107407578 + 107407579.

It is an arithmetic number, because the mean of its divisors is an integer number (107407579).

Almost surely, 2^214815157 is an apocalyptic number.

It is an amenable number.

214815157 is a deficient number, since it is larger than the sum of its proper divisors (1).

214815157 is an equidigital number, since it uses as much as digits as its factorization.

214815157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 34.

The square root of 214815157 is about 14656.5738493005. The cubic root of 214815157 is about 598.9009110500.

The spelling of 214815157 in words is "two hundred fourteen million, eight hundred fifteen thousand, one hundred fifty-seven".