140246553 has 4 divisors (see below), whose sum is σ = 186995408. Its totient is φ = 93497700.

The previous prime is 140246531. The next prime is 140246569. The reversal of 140246553 is 355642041.

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: 355642041 = 3 ⋅118547347.

It is not a de Polignac number, because 140246553 - 2¹³ = 140238361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140246553.

It is not an unprimeable number, because it can be changed into a prime (140246153) 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, 23374423 + ... + 23374428.

It is an arithmetic number, because the mean of its divisors is an integer number (46748852).

Almost surely, 2^140246553 is an apocalyptic number.

It is an amenable number.

140246553 is a deficient number, since it is larger than the sum of its proper divisors (46748855).

140246553 is an equidigital number, since it uses as much as digits as its factorization.

140246553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46748854.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 140246553 is about 11842.5737489787. The cubic root of 140246553 is about 519.5540468996.

Adding to 140246553 its reverse (355642041), we get a palindrome (495888594).

The spelling of 140246553 in words is "one hundred forty million, two hundred forty-six thousand, five hundred fifty-three".