51342307 has 4 divisors (see below), whose sum is σ = 51840880. Its totient is φ = 50843736.

The previous prime is 51342289. The next prime is 51342311. The reversal of 51342307 is 70324315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70324315 = 5 ⋅14064863.

It is a cyclic number.

It is not a de Polignac number, because 51342307 - 2¹¹ = 51340259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51342007) 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, 249132 + ... + 249337.

It is an arithmetic number, because the mean of its divisors is an integer number (12960220).

Almost surely, 2^51342307 is an apocalyptic number.

51342307 is a deficient number, since it is larger than the sum of its proper divisors (498573).

51342307 is a wasteful number, since it uses less digits than its factorization.

51342307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498572.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 51342307 is about 7165.3546318378. The cubic root of 51342307 is about 371.6708147924.

The spelling of 51342307 in words is "fifty-one million, three hundred forty-two thousand, three hundred seven".