137722477 has 4 divisors (see below), whose sum is σ = 137852380. Its totient is φ = 137592576.

The previous prime is 137722411. The next prime is 137722493. The reversal of 137722477 is 774227731.

It is a happy number.

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 62188996 + 75533481 = 7886^2 + 8691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137722477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137720477) 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, 63348 + ... + 65485.

It is an arithmetic number, because the mean of its divisors is an integer number (34463095).

Almost surely, 2^137722477 is an apocalyptic number.

It is an amenable number.

137722477 is a deficient number, since it is larger than the sum of its proper divisors (129903).

137722477 is a wasteful number, since it uses less digits than its factorization.

137722477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129902.

The product of its digits is 115248, while the sum is 40.

The square root of 137722477 is about 11735.5220165104. The cubic root of 137722477 is about 516.4182817655.

The spelling of 137722477 in words is "one hundred thirty-seven million, seven hundred twenty-two thousand, four hundred seventy-seven".