51463533 has 32 divisors (see below), whose sum is σ = 79372800. Its totient is φ = 29332800.

The previous prime is 51463519. The next prime is 51463537. The reversal of 51463533 is 33536415.

It is a happy number.

It is not a de Polignac number, because 51463533 - 2⁹ = 51463021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51463533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51463537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132103 + ... + 132491.

It is an arithmetic number, because the mean of its divisors is an integer number (2480400).

Almost surely, 2^51463533 is an apocalyptic number.

It is an amenable number.

51463533 is a deficient number, since it is larger than the sum of its proper divisors (27909267).

51463533 is a wasteful number, since it uses less digits than its factorization.

51463533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its digits is 16200, while the sum is 30.

The square root of 51463533 is about 7173.8088209821. The cubic root of 51463533 is about 371.9631062382.

Adding to 51463533 its reverse (33536415), we get a palindrome (84999948).

The spelling of 51463533 in words is "fifty-one million, four hundred sixty-three thousand, five hundred thirty-three".