140553505 has 4 divisors (see below), whose sum is σ = 168664212. Its totient is φ = 112442800.

The previous prime is 140553499. The next prime is 140553527. The reversal of 140553505 is 505355041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505355041 = 20963 ⋅24107.

It can be written as a sum of positive squares in 2 ways, for example, as 37246609 + 103306896 = 6103^2 + 10164^2 .

It is a de Polignac number, because none of the positive numbers 2^k-140553505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14055346 + ... + 14055355.

It is an arithmetic number, because the mean of its divisors is an integer number (42166053).

Almost surely, 2^140553505 is an apocalyptic number.

It is an amenable number.

140553505 is a deficient number, since it is larger than the sum of its proper divisors (28110707).

140553505 is an equidigital number, since it uses as much as digits as its factorization.

140553505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28110706.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 140553505 is about 11855.5263485009. The cubic root of 140553505 is about 519.9328130650.

The spelling of 140553505 in words is "one hundred forty million, five hundred fifty-three thousand, five hundred five".