51540035 has 4 divisors (see below), whose sum is σ = 61848048. Its totient is φ = 41232024.

The previous prime is 51540031. The next prime is 51540037. The reversal of 51540035 is 53004515.

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

It is a cyclic number.

It is not a de Polignac number, because 51540035 - 2² = 51540031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51540031) 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, 5153999 + ... + 5154008.

It is an arithmetic number, because the mean of its divisors is an integer number (15462012).

Almost surely, 2^51540035 is an apocalyptic number.

51540035 is a deficient number, since it is larger than the sum of its proper divisors (10308013).

51540035 is a wasteful number, since it uses less digits than its factorization.

51540035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10308012.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 51540035 is about 7179.1388759377. The cubic root of 51540035 is about 372.1473262179.

The spelling of 51540035 in words is "fifty-one million, five hundred forty thousand, thirty-five".