51003142 has 4 divisors (see below), whose sum is σ = 76504716. Its totient is φ = 25501570.

The previous prime is 51003107. The next prime is 51003151. The reversal of 51003142 is 24130015.

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

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, 12750784 + ... + 12750787.

It is an arithmetic number, because the mean of its divisors is an integer number (19126179).

Almost surely, 2^51003142 is an apocalyptic number.

51003142 is a deficient number, since it is larger than the sum of its proper divisors (25501574).

51003142 is a wasteful number, since it uses less digits than its factorization.

51003142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25501573.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51003142 is about 7141.6484091560. The cubic root of 51003142 is about 370.8505923822.

Adding to 51003142 its reverse (24130015), we get a palindrome (75133157).

The spelling of 51003142 in words is "fifty-one million, three thousand, one hundred forty-two".