535121780 has 24 divisors (see below), whose sum is σ = 1128588552. Its totient is φ = 213128192.

The previous prime is 535121779. The next prime is 535121789. The reversal of 535121780 is 87121535.

It can be written as a sum of positive squares in 4 ways, for example, as 20830096 + 514291684 = 4564^2 + 22678^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535121789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52757 + ... + 62076.

It is an arithmetic number, because the mean of its divisors is an integer number (47024523).

Almost surely, 2^535121780 is an apocalyptic number.

It is an amenable number.

535121780 is an abundant number, since it is smaller than the sum of its proper divisors (593466772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

535121780 is a wasteful number, since it uses less digits than its factorization.

535121780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115075 (or 115073 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 535121780 is about 23132.6993669135. The cubic root of 535121780 is about 811.8657292120.

The spelling of 535121780 in words is "five hundred thirty-five million, one hundred twenty-one thousand, seven hundred eighty".