51212552 has 8 divisors (see below), whose sum is σ = 96023550. Its totient is φ = 25606272.

The previous prime is 51212549. The next prime is 51212561. The reversal of 51212552 is 25521215.

It can be written as a sum of positive squares in only one way, i.e., 37625956 + 13586596 = 6134^2 + 3686^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200777 + ... + 3200792.

Almost surely, 2^51212552 is an apocalyptic number.

It is an amenable number.

51212552 is a deficient number, since it is larger than the sum of its proper divisors (44810998).

51212552 is a wasteful number, since it uses less digits than its factorization.

51212552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401575 (or 6401571 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 51212552 is about 7156.2945719136. The cubic root of 51212552 is about 371.3574485967.

Adding to 51212552 its reverse (25521215), we get a palindrome (76733767).

The spelling of 51212552 in words is "fifty-one million, two hundred twelve thousand, five hundred fifty-two".