140577521 has 16 divisors (see below), whose sum is σ = 164736000. Its totient is φ = 119909664.

The previous prime is 140577499. The next prime is 140577553. The reversal of 140577521 is 125775041.

It is not a de Polignac number, because 140577521 - 2²² = 136383217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140577121) 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 15 ways as a sum of consecutive naturals, for example, 79040 + ... + 80798.

It is an arithmetic number, because the mean of its divisors is an integer number (10296000).

Almost surely, 2^140577521 is an apocalyptic number.

It is an amenable number.

140577521 is a deficient number, since it is larger than the sum of its proper divisors (24158479).

140577521 is an equidigital number, since it uses as much as digits as its factorization.

140577521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 140577521 is about 11856.5391662154. The cubic root of 140577521 is about 519.9624245531.

The spelling of 140577521 in words is "one hundred forty million, five hundred seventy-seven thousand, five hundred twenty-one".