653214157 has 2 divisors, whose sum is σ = 653214158. Its totient is φ = 653214156.

The previous prime is 653214151. The next prime is 653214203. The reversal of 653214157 is 751412356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627953481 + 25260676 = 25059^2 + 5026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-653214157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653214151) 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 as a sum of consecutive naturals, namely, 326607078 + 326607079.

It is an arithmetic number, because the mean of its divisors is an integer number (326607079).

Almost surely, 2^653214157 is an apocalyptic number.

It is an amenable number.

653214157 is a deficient number, since it is larger than the sum of its proper divisors (1).

653214157 is an equidigital number, since it uses as much as digits as its factorization.

653214157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 653214157 is about 25558.0546403673. The cubic root of 653214157 is about 867.6645678261.

The spelling of 653214157 in words is "six hundred fifty-three million, two hundred fourteen thousand, one hundred fifty-seven".