523155002 has 4 divisors (see below), whose sum is σ = 784732506. Its totient is φ = 261577500.

The previous prime is 523154963. The next prime is 523155007. The reversal of 523155002 is 200551325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 523082641 + 72361 = 22871^2 + 269^2 .

It is a super-2 number, since 2×523155002² = 547382312235240008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523155007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130788749 + ... + 130788752.

Almost surely, 2^523155002 is an apocalyptic number.

523155002 is a deficient number, since it is larger than the sum of its proper divisors (261577504).

523155002 is a wasteful number, since it uses less digits than its factorization.

523155002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261577503.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 523155002 is about 22872.5818831194. The cubic root of 523155002 is about 805.7682066561.

The spelling of 523155002 in words is "five hundred twenty-three million, one hundred fifty-five thousand, two".