140151561 has 8 divisors (see below), whose sum is σ = 203856864. Its totient is φ = 84940320.

The previous prime is 140151511. The next prime is 140151607. The reversal of 140151561 is 165151041.

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

It is not a de Polignac number, because 140151561 - 2⁶ = 140151497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140151511) 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, 2123476 + ... + 2123541.

It is an arithmetic number, because the mean of its divisors is an integer number (25482108).

Almost surely, 2^140151561 is an apocalyptic number.

140151561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140151561 is a deficient number, since it is larger than the sum of its proper divisors (63705303).

140151561 is a wasteful number, since it uses less digits than its factorization.

140151561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247031.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 140151561 is about 11838.5624549605. The cubic root of 140151561 is about 519.4367187042.

It can be divided in two parts, 14015 and 1561, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 140151561 in words is "one hundred forty million, one hundred fifty-one thousand, five hundred sixty-one".