51633745 has 8 divisors (see below), whose sum is σ = 62040384. Its totient is φ = 41253744.

The previous prime is 51633739. The next prime is 51633763. The reversal of 51633745 is 54733615.

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

It is a cyclic number.

It is not a de Polignac number, because 51633745 - 2³ = 51633737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51633745.

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, 2109 + ... + 10378.

It is an arithmetic number, because the mean of its divisors is an integer number (7755048).

Almost surely, 2^51633745 is an apocalyptic number.

It is an amenable number.

51633745 is a deficient number, since it is larger than the sum of its proper divisors (10406639).

51633745 is a wasteful number, since it uses less digits than its factorization.

51633745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13319.

The product of its digits is 37800, while the sum is 34.

The square root of 51633745 is about 7185.6624607617. The cubic root of 51633745 is about 372.3727355290.

The spelling of 51633745 in words is "fifty-one million, six hundred thirty-three thousand, seven hundred forty-five".