140245551 has 6 divisors (see below), whose sum is σ = 202576920. Its totient is φ = 93497028.

The previous prime is 140245549. The next prime is 140245591. The reversal of 140245551 is 155542041.

It is not a de Polignac number, because 140245551 - 2¹ = 140245549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140245591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7791411 + ... + 7791428.

It is an arithmetic number, because the mean of its divisors is an integer number (33762820).

Almost surely, 2^140245551 is an apocalyptic number.

140245551 is a deficient number, since it is larger than the sum of its proper divisors (62331369).

140245551 is a wasteful number, since it uses less digits than its factorization.

140245551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15582845 (or 15582842 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 140245551 is about 11842.5314439101. The cubic root of 140245551 is about 519.5528095682.

Adding to 140245551 its reverse (155542041), we get a palindrome (295787592).

The spelling of 140245551 in words is "one hundred forty million, two hundred forty-five thousand, five hundred fifty-one".