214153957 has 2 divisors, whose sum is σ = 214153958. Its totient is φ = 214153956.

The previous prime is 214153939. The next prime is 214153969. The reversal of 214153957 is 759351412.

It is a Cunningham number, because it is equal to 14634²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214153956 + 1 = 14634^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214153957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214153157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107076978 + 107076979.

It is an arithmetic number, because the mean of its divisors is an integer number (107076979).

Almost surely, 2^214153957 is an apocalyptic number.

It is an amenable number.

214153957 is a deficient number, since it is larger than the sum of its proper divisors (1).

214153957 is an equidigital number, since it uses as much as digits as its factorization.

214153957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 214153957 is about 14634.0000341670. Note that the first 4 decimals coincide. The cubic root of 214153957 is about 598.2858081671.

The spelling of 214153957 in words is "two hundred fourteen million, one hundred fifty-three thousand, nine hundred fifty-seven".