51548805 has 192 divisors, whose sum is σ = 125798400. Its totient is φ = 19595520.

The previous prime is 51548797. The next prime is 51548813. The reversal of 51548805 is 50884515.

It is an interprime number because it is at equal distance from previous prime (51548797) and next prime (51548813).

It is not a de Polignac number, because 51548805 - 2³ = 51548797 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51548805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1777531 + ... + 1777559.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^51548805 is an apocalyptic number.

51548805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51548805 is an abundant number, since it is smaller than the sum of its proper divisors (74249595).

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

51548805 is a wasteful number, since it uses less digits than its factorization.

51548805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 51548805 is about 7179.7496474459. The cubic root of 51548805 is about 372.1684330911.

The spelling of 51548805 in words is "fifty-one million, five hundred forty-eight thousand, eight hundred five".