51622530 has 32 divisors (see below), whose sum is σ = 126235584. Its totient is φ = 13505856.

The previous prime is 51622507. The next prime is 51622547. The reversal of 51622530 is 3522615.

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 51622530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14644 + ... + 17823.

It is an arithmetic number, because the mean of its divisors is an integer number (3944862).

Almost surely, 2^51622530 is an apocalyptic number.

51622530 is an abundant number, since it is smaller than the sum of its proper divisors (74613054).

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

51622530 is a wasteful number, since it uses less digits than its factorization.

51622530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32530.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 51622530 is about 7184.8820449608. The cubic root of 51622530 is about 372.3457734288.

The spelling of 51622530 in words is "fifty-one million, six hundred twenty-two thousand, five hundred thirty".