138836053 has 4 divisors (see below), whose sum is σ = 138880588. Its totient is φ = 138791520.

The previous prime is 138836051. The next prime is 138836057. The reversal of 138836053 is 350638831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124144164 + 14691889 = 11142^2 + 3833^2 .

It is a cyclic number.

It is not a de Polignac number, because 138836053 - 2¹ = 138836051 is a prime.

It is a super-2 number, since 2×138836053² = 38550899225237618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138836051) 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, 17208 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (34720147).

Almost surely, 2^138836053 is an apocalyptic number.

It is an amenable number.

138836053 is a deficient number, since it is larger than the sum of its proper divisors (44535).

138836053 is an equidigital number, since it uses as much as digits as its factorization.

138836053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44534.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 138836053 is about 11782.8711696258. The cubic root of 138836053 is about 517.8064066400.

The spelling of 138836053 in words is "one hundred thirty-eight million, eight hundred thirty-six thousand, fifty-three".