52503030 has 24 divisors (see below), whose sum is σ = 136508112. Its totient is φ = 14000784.

The previous prime is 52503029. The next prime is 52503047. The reversal of 52503030 is 3030525.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 52502994 and 52503012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291594 + ... + 291773.

It is an arithmetic number, because the mean of its divisors is an integer number (5687838).

Almost surely, 2^52503030 is an apocalyptic number.

52503030 is an abundant number, since it is smaller than the sum of its proper divisors (84005082).

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

52503030 is a wasteful number, since it uses less digits than its factorization.

52503030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583380 (or 583377 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 52503030 is about 7245.8974599424. The cubic root of 52503030 is about 374.4508228044.

Adding to 52503030 its reverse (3030525), we get a palindrome (55533555).

The spelling of 52503030 in words is "fifty-two million, five hundred three thousand, thirty".