51485477 has 12 divisors (see below), whose sum is σ = 54507744. Its totient is φ = 48537720.

The previous prime is 51485417. The next prime is 51485509. The reversal of 51485477 is 77458415.

It is a de Polignac number, because none of the positive numbers 2^k-51485477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51485417) 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, 243902 + ... + 244112.

It is an arithmetic number, because the mean of its divisors is an integer number (4542312).

Almost surely, 2^51485477 is an apocalyptic number.

It is an amenable number.

51485477 is a deficient number, since it is larger than the sum of its proper divisors (3022267).

51485477 is a wasteful number, since it uses less digits than its factorization.

51485477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 337 counting only the distinct ones).

The product of its digits is 156800, while the sum is 41.

The square root of 51485477 is about 7175.3381105004. The cubic root of 51485477 is about 372.0159669602.

The spelling of 51485477 in words is "fifty-one million, four hundred eighty-five thousand, four hundred seventy-seven".