140550551 has 4 divisors (see below), whose sum is σ = 140743032. Its totient is φ = 140358072.

The previous prime is 140550533. The next prime is 140550593. The reversal of 140550551 is 155055041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140550551 - 2¹⁴ = 140534167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140550551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140550511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95141 + ... + 96606.

It is an arithmetic number, because the mean of its divisors is an integer number (35185758).

Almost surely, 2^140550551 is an apocalyptic number.

140550551 is a deficient number, since it is larger than the sum of its proper divisors (192481).

140550551 is an equidigital number, since it uses as much as digits as its factorization.

140550551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192480.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 140550551 is about 11855.4017645966. The cubic root of 140550551 is about 519.9291705796.

The spelling of 140550551 in words is "one hundred forty million, five hundred fifty thousand, five hundred fifty-one".