53481785 has 24 divisors (see below), whose sum is σ = 77910336. Its totient is φ = 35075040.

The previous prime is 53481781. The next prime is 53481803. The reversal of 53481785 is 58718435.

It is not a de Polignac number, because 53481785 - 2² = 53481781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53481781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 890 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (3246264).

Almost surely, 2^53481785 is an apocalyptic number.

It is an amenable number.

53481785 is a deficient number, since it is larger than the sum of its proper divisors (24428551).

53481785 is a wasteful number, since it uses less digits than its factorization.

53481785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533 (or 9526 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 53481785 is about 7313.1241613964. The cubic root of 53481785 is about 376.7633339314.

The spelling of 53481785 in words is "fifty-three million, four hundred eighty-one thousand, seven hundred eighty-five".