140556551 has 8 divisors (see below), whose sum is σ = 144452880. Its totient is φ = 136688832.

The previous prime is 140556497. The next prime is 140556587. The reversal of 140556551 is 155655041.

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-140556551 is a prime.

It is a super-3 number, since 3×140556551³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140576551) 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 7 ways as a sum of consecutive naturals, for example, 3005 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (18056610).

Almost surely, 2^140556551 is an apocalyptic number.

140556551 is a deficient number, since it is larger than the sum of its proper divisors (3896329).

140556551 is a wasteful number, since it uses less digits than its factorization.

140556551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 140556551 is about 11855.6548111017. The cubic root of 140556551 is about 519.9365689393.

The spelling of 140556551 in words is "one hundred forty million, five hundred fifty-six thousand, five hundred fifty-one".