140553813 has 4 divisors (see below), whose sum is σ = 187405088. Its totient is φ = 93702540.

The previous prime is 140553769. The next prime is 140553823. The reversal of 140553813 is 318355041.

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.

It is not a de Polignac number, because 140553813 - 2¹⁶ = 140488277 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 (140553823) 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, 23425633 + ... + 23425638.

It is an arithmetic number, because the mean of its divisors is an integer number (46851272).

Almost surely, 2^140553813 is an apocalyptic number.

It is an amenable number.

140553813 is a deficient number, since it is larger than the sum of its proper divisors (46851275).

140553813 is an equidigital number, since it uses as much as digits as its factorization.

140553813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46851274.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 140553813 is about 11855.5393382165. The cubic root of 140553813 is about 519.9331928473.

The spelling of 140553813 in words is "one hundred forty million, five hundred fifty-three thousand, eight hundred thirteen".