545023988 has 24 divisors (see below), whose sum is σ = 987156744. Its totient is φ = 263116800.

The previous prime is 545023979. The next prime is 545023991. The reversal of 545023988 is 889320545.

It can be written as a sum of positive squares in 4 ways, for example, as 101163364 + 443860624 = 10058^2 + 21068^2 .

It is a super-2 number, since 2×545023988² = 594102294990848288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223 + ... + 33038.

It is an arithmetic number, because the mean of its divisors is an integer number (41131531).

Almost surely, 2^545023988 is an apocalyptic number.

It is an amenable number.

545023988 is a deficient number, since it is larger than the sum of its proper divisors (442132756).

545023988 is a wasteful number, since it uses less digits than its factorization.

545023988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34403 (or 34401 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 545023988 is about 23345.7488207168. The cubic root of 545023988 is about 816.8429010381.

The spelling of 545023988 in words is "five hundred forty-five million, twenty-three thousand, nine hundred eighty-eight".