137779201 has 4 divisors (see below), whose sum is σ = 157461952. Its totient is φ = 118096452.

The previous prime is 137779199. The next prime is 137779207. The reversal of 137779201 is 102977731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102977731 = 173 ⋅595247.

It is a cyclic number.

It is not a de Polignac number, because 137779201 - 2¹ = 137779199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137779207) 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, 9841365 + ... + 9841378.

It is an arithmetic number, because the mean of its divisors is an integer number (39365488).

Almost surely, 2^137779201 is an apocalyptic number.

It is an amenable number.

137779201 is a deficient number, since it is larger than the sum of its proper divisors (19682751).

137779201 is an equidigital number, since it uses as much as digits as its factorization.

137779201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19682750.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 137779201 is about 11737.9385328089. The cubic root of 137779201 is about 516.4891714041.

The spelling of 137779201 in words is "one hundred thirty-seven million, seven hundred seventy-nine thousand, two hundred one".