51755039 has 4 divisors (see below), whose sum is σ = 59148624. Its totient is φ = 44361456.

The previous prime is 51755009. The next prime is 51755047. The reversal of 51755039 is 93055715.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51755039 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 (51755009) 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, 3696782 + ... + 3696795.

It is an arithmetic number, because the mean of its divisors is an integer number (14787156).

Almost surely, 2^51755039 is an apocalyptic number.

51755039 is a deficient number, since it is larger than the sum of its proper divisors (7393585).

51755039 is an equidigital number, since it uses as much as digits as its factorization.

51755039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7393584.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 51755039 is about 7194.0975111545. The cubic root of 51755039 is about 372.6640905811.

The spelling of 51755039 in words is "fifty-one million, seven hundred fifty-five thousand, thirty-nine".