137640001 has 4 divisors (see below), whose sum is σ = 137701332. Its totient is φ = 137578672.

The previous prime is 137639987. The next prime is 137640029. The reversal of 137640001 is 100046731.

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 60217600 + 77422401 = 7760^2 + 8799^2 .

It is a cyclic number.

It is not a de Polignac number, because 137640001 - 2¹⁷ = 137508929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137640401) 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, 27166 + ... + 31831.

It is an arithmetic number, because the mean of its divisors is an integer number (34425333).

Almost surely, 2^137640001 is an apocalyptic number.

It is an amenable number.

137640001 is a deficient number, since it is larger than the sum of its proper divisors (61331).

137640001 is an equidigital number, since it uses as much as digits as its factorization.

137640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61330.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 137640001 is about 11732.0075434684. The cubic root of 137640001 is about 516.3151743664.

Adding to 137640001 its reverse (100046731), we get a palindrome (237686732).

The spelling of 137640001 in words is "one hundred thirty-seven million, six hundred forty thousand, one".