137807401 has 4 divisors (see below), whose sum is σ = 137955412. Its totient is φ = 137659392.

The previous prime is 137807381. The next prime is 137807407. The reversal of 137807401 is 104708731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104708731 = 31 ⋅3377701.

It can be written as a sum of positive squares in 2 ways, for example, as 10569001 + 127238400 = 3251^2 + 11280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137807401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137807407) 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, 72600 + ... + 74473.

It is an arithmetic number, because the mean of its divisors is an integer number (34488853).

Almost surely, 2^137807401 is an apocalyptic number.

It is an amenable number.

137807401 is a deficient number, since it is larger than the sum of its proper divisors (148011).

137807401 is an equidigital number, since it uses as much as digits as its factorization.

137807401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148010.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 137807401 is about 11739.1397044247. The cubic root of 137807401 is about 516.5244065265.

The spelling of 137807401 in words is "one hundred thirty-seven million, eight hundred seven thousand, four hundred one".