53405004 has 24 divisors (see below), whose sum is σ = 124755120. Its totient is φ = 17781184.

The previous prime is 53405003. The next prime is 53405039. The reversal of 53405004 is 40050435.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53405003) 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, 11302 + ... + 15314.

It is an arithmetic number, because the mean of its divisors is an integer number (5198130).

Almost surely, 2^53405004 is an apocalyptic number.

It is an amenable number.

53405004 is an abundant number, since it is smaller than the sum of its proper divisors (71350116).

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

53405004 is a wasteful number, since it uses less digits than its factorization.

53405004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 53405004 is about 7307.8727410923. The cubic root of 53405004 is about 376.5829477794.

Adding to 53405004 its reverse (40050435), we get a palindrome (93455439).

The spelling of 53405004 in words is "fifty-three million, four hundred five thousand, four".