51652538 has 48 divisors (see below), whose sum is σ = 94820544. Its totient is φ = 20657280.

The previous prime is 51652499. The next prime is 51652547. The reversal of 51652538 is 83525615.

51652538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51652498 and 51652507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482681 + ... + 482787.

It is an arithmetic number, because the mean of its divisors is an integer number (1975428).

Almost surely, 2^51652538 is an apocalyptic number.

51652538 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51652538 is a deficient number, since it is larger than the sum of its proper divisors (43168006).

51652538 is a wasteful number, since it uses less digits than its factorization.

51652538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 186 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 51652538 is about 7186.9700152429. The cubic root of 51652538 is about 372.4179072281.

The spelling of 51652538 in words is "fifty-one million, six hundred fifty-two thousand, five hundred thirty-eight".