51033775 has 36 divisors (see below), whose sum is σ = 70254432. Its totient is φ = 36741120.

The previous prime is 51033751. The next prime is 51033799. The reversal of 51033775 is 57733015.

51033775 = 223² + 224² + ... + 547².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51033751) and next prime (51033799).

It is not a de Polignac number, because 51033775 - 2⁵ = 51033743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 198447 + ... + 198703.

It is an arithmetic number, because the mean of its divisors is an integer number (1951512).

Almost surely, 2^51033775 is an apocalyptic number.

51033775 is a deficient number, since it is larger than the sum of its proper divisors (19220657).

51033775 is a wasteful number, since it uses less digits than its factorization.

51033775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 51033775 is about 7143.7927601520. The cubic root of 51033775 is about 370.9248230547.

The spelling of 51033775 in words is "fifty-one million, thirty-three thousand, seven hundred seventy-five".