140140551 has 8 divisors (see below), whose sum is σ = 187246080. Its totient is φ = 93231032.

The previous prime is 140140547. The next prime is 140140573. The reversal of 140140551 is 155041041.

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

It is a cyclic number.

It is not a de Polignac number, because 140140551 - 2² = 140140547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140140591) 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, 47325 + ... + 50198.

It is an arithmetic number, because the mean of its divisors is an integer number (23405760).

Almost surely, 2^140140551 is an apocalyptic number.

140140551 is a deficient number, since it is larger than the sum of its proper divisors (47105529).

140140551 is an equidigital number, since it uses as much as digits as its factorization.

140140551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98005.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 140140551 is about 11838.0974400450. The cubic root of 140140551 is about 519.4231164106.

Adding to 140140551 its reverse (155041041), we get a palindrome (295181592).

The spelling of 140140551 in words is "one hundred forty million, one hundred forty thousand, five hundred fifty-one".