51052142 has 4 divisors (see below), whose sum is σ = 76578216. Its totient is φ = 25526070.

The previous prime is 51052129. The next prime is 51052147. The reversal of 51052142 is 24125015.

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

It is a super-3 number, since 3×51052142³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51052147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763034 + ... + 12763037.

It is an arithmetic number, because the mean of its divisors is an integer number (19144554).

Almost surely, 2^51052142 is an apocalyptic number.

51052142 is a deficient number, since it is larger than the sum of its proper divisors (25526074).

51052142 is a wasteful number, since it uses less digits than its factorization.

51052142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25526073.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51052142 is about 7145.0781661225. The cubic root of 51052142 is about 370.9693161973.

Adding to 51052142 its reverse (24125015), we get a palindrome (75177157).

The spelling of 51052142 in words is "fifty-one million, fifty-two thousand, one hundred forty-two".