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210157 is a prime number
BaseRepresentation
bin110011010011101101
3101200021121
4303103231
523211112
64300541
71533463
oct632355
9350247
10210157
11133992
12a1751
137486c
1456833
1542407
hex334ed

210157 has 2 divisors, whose sum is σ = 210158. Its totient is φ = 210156.

The previous prime is 210143. The next prime is 210169. The reversal of 210157 is 751012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175561 + 34596 = 419^2 + 186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-210157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105078 + 105079.

It is an arithmetic number, because the mean of its divisors is an integer number (105079).

2210157 is an apocalyptic number.

It is an amenable number.

210157 is a deficient number, since it is larger than the sum of its proper divisors (1).

210157 is an equidigital number, since it uses as much as digits as its factorization.

210157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 210157 is about 458.4288385344. The cubic root of 210157 is about 59.4540284687.

Adding to 210157 its reverse (751012), we get a palindrome (961169).

The spelling of 210157 in words is "two hundred ten thousand, one hundred fifty-seven".