140543551 has 8 divisors (see below), whose sum is σ = 148688000. Its totient is φ = 132473880.

The previous prime is 140543527. The next prime is 140543561. The reversal of 140543551 is 155345041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140543551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140543521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14805 + ... + 22366.

It is an arithmetic number, because the mean of its divisors is an integer number (18586000).

Almost surely, 2^140543551 is an apocalyptic number.

140543551 is a deficient number, since it is larger than the sum of its proper divisors (8144449).

140543551 is a wasteful number, since it uses less digits than its factorization.

140543551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37389.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 140543551 is about 11855.1065368473. The cubic root of 140543551 is about 519.9205388937.

Adding to 140543551 its reverse (155345041), we get a palindrome (295888592).

The spelling of 140543551 in words is "one hundred forty million, five hundred forty-three thousand, five hundred fifty-one".