51667530 has 16 divisors (see below), whose sum is σ = 124002144. Its totient is φ = 13778000.

The previous prime is 51667529. The next prime is 51667541. The reversal of 51667530 is 3576615.

It is a junction number, because it is equal to n+sod(n) for n = 51667491 and 51667500.

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, 861096 + ... + 861155.

It is an arithmetic number, because the mean of its divisors is an integer number (7750134).

Almost surely, 2^51667530 is an apocalyptic number.

51667530 is an abundant number, since it is smaller than the sum of its proper divisors (72334614).

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

51667530 is a wasteful number, since it uses less digits than its factorization.

51667530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722261.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 51667530 is about 7188.0129382187. The cubic root of 51667530 is about 372.4539348168.

The spelling of 51667530 in words is "fifty-one million, six hundred sixty-seven thousand, five hundred thirty".