53780737 has 4 divisors (see below), whose sum is σ = 54925056. Its totient is φ = 52636420.

The previous prime is 53780731. The next prime is 53780747. The reversal of 53780737 is 73708735.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53780737 - 2²³ = 45392129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53780737.

It is not an unprimeable number, because it can be changed into a prime (53780731) 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, 572089 + ... + 572182.

It is an arithmetic number, because the mean of its divisors is an integer number (13731264).

Almost surely, 2^53780737 is an apocalyptic number.

It is an amenable number.

53780737 is a deficient number, since it is larger than the sum of its proper divisors (1144319).

53780737 is a wasteful number, since it uses less digits than its factorization.

53780737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144318.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 53780737 is about 7333.5350957093. The cubic root of 53780737 is about 377.4640393796.

The spelling of 53780737 in words is "fifty-three million, seven hundred eighty thousand, seven hundred thirty-seven".