140630551 has 2 divisors, whose sum is σ = 140630552. Its totient is φ = 140630550.

The previous prime is 140630549. The next prime is 140630569. The reversal of 140630551 is 155036041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140630551 - 2¹ = 140630549 is a prime.

Together with 140630549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140640551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70315275 + 70315276.

It is an arithmetic number, because the mean of its divisors is an integer number (70315276).

Almost surely, 2^140630551 is an apocalyptic number.

140630551 is a deficient number, since it is larger than the sum of its proper divisors (1).

140630551 is an equidigital number, since it uses as much as digits as its factorization.

140630551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 140630551 is about 11858.7752740323. The cubic root of 140630551 is about 520.0277980702.

Adding to 140630551 its reverse (155036041), we get a palindrome (295666592).

The spelling of 140630551 in words is "one hundred forty million, six hundred thirty thousand, five hundred fifty-one".