187113053 has 4 divisors (see below), whose sum is σ = 191676828. Its totient is φ = 182549280.

The previous prime is 187113041. The next prime is 187113061. The reversal of 187113053 is 350311781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350311781 = 23 ⋅15230947.

It can be written as a sum of positive squares in 2 ways, for example, as 44382244 + 142730809 = 6662^2 + 11947^2 .

It is a cyclic number.

It is not a de Polignac number, because 187113053 - 2¹⁶ = 187047517 is a prime.

It is a super-2 number, since 2×187113053² = 70022589205961618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187116053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281826 + ... + 2281907.

It is an arithmetic number, because the mean of its divisors is an integer number (47919207).

Almost surely, 2^187113053 is an apocalyptic number.

It is an amenable number.

187113053 is a deficient number, since it is larger than the sum of its proper divisors (4563775).

187113053 is an equidigital number, since it uses as much as digits as its factorization.

187113053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563774.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 187113053 is about 13678.9273336764. The cubic root of 187113053 is about 571.9631223474.

The spelling of 187113053 in words is "one hundred eighty-seven million, one hundred thirteen thousand, fifty-three".