1235501 has 2 divisors, whose sum is σ = 1235502. Its totient is φ = 1235500.

The previous prime is 1235497. The next prime is 1235503. The reversal of 1235501 is 1055321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 90601 = 1070^2 + 301^2 .

It is an emirp because it is prime and its reverse (1055321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1235501 - 2² = 1235497 is a prime.

Together with 1235503, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1235501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1235503) 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, 617750 + 617751.

It is an arithmetic number, because the mean of its divisors is an integer number (617751).

2^1235501 is an apocalyptic number.

It is an amenable number.

1235501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235501 is an equidigital number, since it uses as much as digits as its factorization.

1235501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1235501 is about 1111.5309262454. The cubic root of 1235501 is about 107.3036183919.

The spelling of 1235501 in words is "one million, two hundred thirty-five thousand, five hundred one".