140563651 has 2 divisors, whose sum is σ = 140563652. Its totient is φ = 140563650.

The previous prime is 140563627. The next prime is 140563693. The reversal of 140563651 is 156365041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140563651 - 2²⁵ = 107009219 is a prime.

It is not a weakly prime, because it can be changed into another prime (140563601) 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 as a sum of consecutive naturals, namely, 70281825 + 70281826.

It is an arithmetic number, because the mean of its divisors is an integer number (70281826).

Almost surely, 2^140563651 is an apocalyptic number.

140563651 is a deficient number, since it is larger than the sum of its proper divisors (1).

140563651 is an equidigital number, since it uses as much as digits as its factorization.

140563651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 140563651 is about 11855.9542424893. The cubic root of 140563651 is about 519.9453233931.

It can be divided in two parts, 1405 and 63651, that added together give a palindrome (65056).

The spelling of 140563651 in words is "one hundred forty million, five hundred sixty-three thousand, six hundred fifty-one".