140521522 has 8 divisors (see below), whose sum is σ = 211947372. Its totient is φ = 69872400.

The previous prime is 140521519. The next prime is 140521547. The reversal of 140521522 is 225125041.

It can be written as a sum of positive squares in 2 ways, for example, as 87216921 + 53304601 = 9339^2 + 7301^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 140521493 and 140521502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193729 + ... + 194452.

Almost surely, 2^140521522 is an apocalyptic number.

140521522 is a deficient number, since it is larger than the sum of its proper divisors (71425850).

140521522 is a wasteful number, since it uses less digits than its factorization.

140521522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388364.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 140521522 is about 11854.1774071422. The cubic root of 140521522 is about 519.8933731079.

Adding to 140521522 its reverse (225125041), we get a palindrome (365646563).

The spelling of 140521522 in words is "one hundred forty million, five hundred twenty-one thousand, five hundred twenty-two".