137454881 has 4 divisors (see below), whose sum is σ = 137480772. Its totient is φ = 137428992.

The previous prime is 137454859. The next prime is 137454883. The reversal of 137454881 is 188454731.

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 59043856 + 78411025 = 7684^2 + 8855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137454881 is a prime.

It is a super-2 number, since 2×137454881² = 37787688621448322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137454883) 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, 1760 + ... + 16673.

It is an arithmetic number, because the mean of its divisors is an integer number (34370193).

Almost surely, 2^137454881 is an apocalyptic number.

It is an amenable number.

137454881 is a deficient number, since it is larger than the sum of its proper divisors (25891).

137454881 is an equidigital number, since it uses as much as digits as its factorization.

137454881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25890.

The product of its digits is 107520, while the sum is 41.

The square root of 137454881 is about 11724.1153610838. The cubic root of 137454881 is about 516.0835964653.

The spelling of 137454881 in words is "one hundred thirty-seven million, four hundred fifty-four thousand, eight hundred eighty-one".