137856133 has 4 divisors (see below), whose sum is σ = 137892748. Its totient is φ = 137819520.

The previous prime is 137856119. The next prime is 137856137. The reversal of 137856133 is 331658731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331658731 = 379 ⋅875089.

It can be written as a sum of positive squares in 2 ways, for example, as 127983969 + 9872164 = 11313^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 137856133 - 2²¹ = 135758981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137856092 and 137856101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137856137) 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 in 3 ways as a sum of consecutive naturals, for example, 11916 + ... + 20437.

It is an arithmetic number, because the mean of its divisors is an integer number (34473187).

Almost surely, 2^137856133 is an apocalyptic number.

It is an amenable number.

137856133 is a deficient number, since it is larger than the sum of its proper divisors (36615).

137856133 is an equidigital number, since it uses as much as digits as its factorization.

137856133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36614.

The product of its digits is 45360, while the sum is 37.

The square root of 137856133 is about 11741.2151415431. The cubic root of 137856133 is about 516.5852844879.

The spelling of 137856133 in words is "one hundred thirty-seven million, eight hundred fifty-six thousand, one hundred thirty-three".