53506004 has 24 divisors (see below), whose sum is σ = 103457088. Its totient is φ = 24083840.

The previous prime is 53506003. The next prime is 53506009. The reversal of 53506004 is 40060535.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53506001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15542 + ... + 18669.

It is an arithmetic number, because the mean of its divisors is an integer number (4310712).

Almost surely, 2^53506004 is an apocalyptic number.

It is an amenable number.

53506004 is a deficient number, since it is larger than the sum of its proper divisors (49951084).

53506004 is a wasteful number, since it uses less digits than its factorization.

53506004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34255 (or 34253 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53506004 is about 7314.7798326402. The cubic root of 53506004 is about 376.8201972426.

Adding to 53506004 its reverse (40060535), we get a palindrome (93566539).

The spelling of 53506004 in words is "fifty-three million, five hundred six thousand, four".