51020254 has 16 divisors (see below), whose sum is σ = 78321600. Its totient is φ = 24920064.

The previous prime is 51020237. The next prime is 51020269. The reversal of 51020254 is 45202015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13662 + ... + 16990.

It is an arithmetic number, because the mean of its divisors is an integer number (4895100).

Almost surely, 2^51020254 is an apocalyptic number.

51020254 is a deficient number, since it is larger than the sum of its proper divisors (27301346).

51020254 is a wasteful number, since it uses less digits than its factorization.

51020254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51020254 is about 7142.8463514204. The cubic root of 51020254 is about 370.8920622833.

Adding to 51020254 its reverse (45202015), we get a palindrome (96222269).

The spelling of 51020254 in words is "fifty-one million, twenty thousand, two hundred fifty-four".