51670530 has 48 divisors (see below), whose sum is σ = 134784000. Its totient is φ = 13733664.

The previous prime is 51670529. The next prime is 51670543. The reversal of 51670530 is 3507615.

It is a junction number, because it is equal to n+sod(n) for n = 51670494 and 51670503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33721 + ... + 35219.

It is an arithmetic number, because the mean of its divisors is an integer number (2808000).

Almost surely, 2^51670530 is an apocalyptic number.

51670530 is an abundant number, since it is smaller than the sum of its proper divisors (83113470).

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

51670530 is a wasteful number, since it uses less digits than its factorization.

51670530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 51670530 is about 7188.2216159492. The cubic root of 51670530 is about 372.4611433426.

The spelling of 51670530 in words is "fifty-one million, six hundred seventy thousand, five hundred thirty".