140055613 has 4 divisors (see below), whose sum is σ = 144573568. Its totient is φ = 135537660.

The previous prime is 140055607. The next prime is 140055623. The reversal of 140055613 is 316550041.

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: 316550041 = 197 ⋅1606853.

It is a cyclic number.

It is not a de Polignac number, because 140055613 - 2⁵ = 140055581 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 (140055623) 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, 2258931 + ... + 2258992.

It is an arithmetic number, because the mean of its divisors is an integer number (36143392).

Almost surely, 2^140055613 is an apocalyptic number.

It is an amenable number.

140055613 is a deficient number, since it is larger than the sum of its proper divisors (4517955).

140055613 is an equidigital number, since it uses as much as digits as its factorization.

140055613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517954.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 140055613 is about 11834.5094110402. The cubic root of 140055613 is about 519.3181558866.

The spelling of 140055613 in words is "one hundred forty million, fifty-five thousand, six hundred thirteen".