161201253 has 8 divisors (see below), whose sum is σ = 215497728. Its totient is φ = 107186144.

The previous prime is 161201251. The next prime is 161201269. The reversal of 161201253 is 352102161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161201253 - 2¹ = 161201251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161201251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69000 + ... + 71297.

It is an arithmetic number, because the mean of its divisors is an integer number (26937216).

Almost surely, 2^161201253 is an apocalyptic number.

It is an amenable number.

161201253 is a deficient number, since it is larger than the sum of its proper divisors (54296475).

161201253 is a wasteful number, since it uses less digits than its factorization.

161201253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140683.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 161201253 is about 12696.5055428649. The cubic root of 161201253 is about 544.2387632793.

The spelling of 161201253 in words is "one hundred sixty-one million, two hundred one thousand, two hundred fifty-three".