51254460 has 36 divisors (see below), whose sum is σ = 155472408. Its totient is φ = 13667808.

The previous prime is 51254459. The next prime is 51254461. The reversal of 51254460 is 6445215.

It is an interprime number because it is at equal distance from previous prime (51254459) and next prime (51254461).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51254461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142194 + ... + 142553.

It is an arithmetic number, because the mean of its divisors is an integer number (4318678).

Almost surely, 2^51254460 is an apocalyptic number.

It is an amenable number.

51254460 is an abundant number, since it is smaller than the sum of its proper divisors (104217948).

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

51254460 is a wasteful number, since it uses less digits than its factorization.

51254460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284762 (or 284757 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 51254460 is about 7159.2220247734. Note that the first 3 decimals coincide. The cubic root of 51254460 is about 371.4587167700.

Adding to 51254460 its reverse (6445215), we get a palindrome (57699675).

The spelling of 51254460 in words is "fifty-one million, two hundred fifty-four thousand, four hundred sixty".