51245342 has 4 divisors (see below), whose sum is σ = 76868016. Its totient is φ = 25622670.

The previous prime is 51245339. The next prime is 51245371. The reversal of 51245342 is 24354215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24354215 = 5 ⋅4870843.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12811334 + ... + 12811337.

It is an arithmetic number, because the mean of its divisors is an integer number (19217004).

Almost surely, 2^51245342 is an apocalyptic number.

51245342 is a deficient number, since it is larger than the sum of its proper divisors (25622674).

51245342 is a wasteful number, since it uses less digits than its factorization.

51245342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25622673.

The product of its digits is 4800, while the sum is 26.

The square root of 51245342 is about 7158.5851954140. The cubic root of 51245342 is about 371.4366883687.

Adding to 51245342 its reverse (24354215), we get a palindrome (75599557).

It can be divided in two parts, 512 and 45342, that added together give a palindrome (45854).

The spelling of 51245342 in words is "fifty-one million, two hundred forty-five thousand, three hundred forty-two".