140052561 has 8 divisors (see below), whose sum is σ = 203712864. Its totient is φ = 84880320.

The previous prime is 140052557. The next prime is 140052581. The reversal of 140052561 is 165250041.

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

It is not a de Polignac number, because 140052561 - 2² = 140052557 is a prime.

It is a super-2 number, since 2×140052561² = 39229439685317442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140052581) 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, 2121976 + ... + 2122041.

It is an arithmetic number, because the mean of its divisors is an integer number (25464108).

Almost surely, 2^140052561 is an apocalyptic number.

140052561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140052561 is a deficient number, since it is larger than the sum of its proper divisors (63660303).

140052561 is a wasteful number, since it uses less digits than its factorization.

140052561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244031.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 140052561 is about 11834.3804654067. The cubic root of 140052561 is about 519.3143836457.

The spelling of 140052561 in words is "one hundred forty million, fifty-two thousand, five hundred sixty-one".