51616630 has 16 divisors (see below), whose sum is σ = 100057104. Its totient is φ = 19058400.

The previous prime is 51616583. The next prime is 51616667. The reversal of 51616630 is 3661615.

It is a congruent number.

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, 198396 + ... + 198655.

It is an arithmetic number, because the mean of its divisors is an integer number (6253569).

Almost surely, 2^51616630 is an apocalyptic number.

51616630 is a deficient number, since it is larger than the sum of its proper divisors (48440474).

51616630 is a wasteful number, since it uses less digits than its factorization.

51616630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397071.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 51616630 is about 7184.4714488959. The cubic root of 51616630 is about 372.3315876088.

It can be divided in two parts, 51616 and 630, that multiplied together give a triangular number (32518080 = T₈₀₆₄).

The spelling of 51616630 in words is "fifty-one million, six hundred sixteen thousand, six hundred thirty".