51120633 has 8 divisors (see below), whose sum is σ = 68368096. Its totient is φ = 33976800.

The previous prime is 51120617. The next prime is 51120647. The reversal of 51120633 is 33602115.

51120633 = T₃₈₂ + T₃₈₃ + ... + T₇₁₂.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51120633 - 2⁴ = 51120617 is a prime.

It is a super-2 number, since 2×51120633² = 5226638236641378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51120653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24748 + ... + 26733.

It is an arithmetic number, because the mean of its divisors is an integer number (8546012).

Almost surely, 2^51120633 is an apocalyptic number.

It is an amenable number.

51120633 is a deficient number, since it is larger than the sum of its proper divisors (17247463).

51120633 is a wasteful number, since it uses less digits than its factorization.

51120633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51815.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51120633 is about 7149.8694393674. The cubic root of 51120633 is about 371.1351382014.

Adding to 51120633 its reverse (33602115), we get a palindrome (84722748).

The spelling of 51120633 in words is "fifty-one million, one hundred twenty thousand, six hundred thirty-three".