161102253 has 32 divisors (see below), whose sum is σ = 236347776. Its totient is φ = 97014528.

The previous prime is 161102233. The next prime is 161102261. The reversal of 161102253 is 352201161.

It is not a de Polignac number, because 161102253 - 2¹⁰ = 161101229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161102213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 508051 + ... + 508367.

It is an arithmetic number, because the mean of its divisors is an integer number (7385868).

Almost surely, 2^161102253 is an apocalyptic number.

161102253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161102253 is a deficient number, since it is larger than the sum of its proper divisors (75245523).

161102253 is a wasteful number, since it uses less digits than its factorization.

161102253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

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

The square root of 161102253 is about 12692.6062335519. The cubic root of 161102253 is about 544.1273276873.

The spelling of 161102253 in words is "one hundred sixty-one million, one hundred two thousand, two hundred fifty-three".