53745757 has 4 divisors (see below), whose sum is σ = 57880060. Its totient is φ = 49611456.

The previous prime is 53745707. The next prime is 53745761. The reversal of 53745757 is 75754735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13980121 + 39765636 = 3739^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 53745757 - 2²³ = 45357149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53745707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067132 + ... + 2067157.

It is an arithmetic number, because the mean of its divisors is an integer number (14470015).

Almost surely, 2^53745757 is an apocalyptic number.

It is an amenable number.

53745757 is a deficient number, since it is larger than the sum of its proper divisors (4134303).

53745757 is a wasteful number, since it uses less digits than its factorization.

53745757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134302.

The product of its digits is 514500, while the sum is 43.

The square root of 53745757 is about 7331.1497733984. The cubic root of 53745757 is about 377.3821850670.

The spelling of 53745757 in words is "fifty-three million, seven hundred forty-five thousand, seven hundred fifty-seven".