51142254 has 32 divisors (see below), whose sum is σ = 106323840. Its totient is φ = 16380000.

The previous prime is 51142241. The next prime is 51142277. The reversal of 51142254 is 45224115.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43089 + ... + 44259.

It is an arithmetic number, because the mean of its divisors is an integer number (3322620).

Almost surely, 2^51142254 is an apocalyptic number.

51142254 is an abundant number, since it is smaller than the sum of its proper divisors (55181586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51142254 is a wasteful number, since it uses less digits than its factorization.

51142254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its digits is 1600, while the sum is 24.

The square root of 51142254 is about 7151.3812651823. The cubic root of 51142254 is about 371.1874535540.

Adding to 51142254 its reverse (45224115), we get a palindrome (96366369).

The spelling of 51142254 in words is "fifty-one million, one hundred forty-two thousand, two hundred fifty-four".