53745705 has 24 divisors (see below), whose sum is σ = 100326408. Its totient is φ = 26459136.

The previous prime is 53745701. The next prime is 53745707. The reversal of 53745705 is 50754735.

It can be written as a sum of positive squares in 4 ways, for example, as 12027024 + 41718681 = 3468^2 + 6459^2 .

It is not a de Polignac number, because 53745705 - 2² = 53745701 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53745705.

It is not an unprimeable number, because it can be changed into a prime (53745701) 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, 45352 + ... + 46521.

It is an arithmetic number, because the mean of its divisors is an integer number (4180267).

Almost surely, 2^53745705 is an apocalyptic number.

It is an amenable number.

53745705 is a deficient number, since it is larger than the sum of its proper divisors (46580703).

53745705 is a wasteful number, since it uses less digits than its factorization.

53745705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91897 (or 91894 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 36.

The square root of 53745705 is about 7331.1462268870. The cubic root of 53745705 is about 377.3820633590.

The spelling of 53745705 in words is "fifty-three million, seven hundred forty-five thousand, seven hundred five".