51533061 has 8 divisors (see below), whose sum is σ = 68985504. Its totient is φ = 34218000.

The previous prime is 51533057. The next prime is 51533099. The reversal of 51533061 is 16033515.

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

It is not a de Polignac number, because 51533061 - 2² = 51533057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51533051) 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, 33466 + ... + 34971.

It is an arithmetic number, because the mean of its divisors is an integer number (8623188).

Almost surely, 2^51533061 is an apocalyptic number.

It is an amenable number.

51533061 is a deficient number, since it is larger than the sum of its proper divisors (17452443).

51533061 is a wasteful number, since it uses less digits than its factorization.

51533061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68691.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 51533061 is about 7178.6531466564. The cubic root of 51533061 is about 372.1305400922.

Adding to 51533061 its reverse (16033515), we get a palindrome (67566576).

The spelling of 51533061 in words is "fifty-one million, five hundred thirty-three thousand, sixty-one".