52121257234 has 4 divisors (see below), whose sum is σ = 78181885854. Its totient is φ = 26060628616.

The previous prime is 52121257231. The next prime is 52121257247. The reversal of 52121257234 is 43275212125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50129866609 + 1991390625 = 223897^2 + 44625^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52121257234.

It is not an unprimeable number, because it can be changed into a prime (52121257231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13030314307 + ... + 13030314310.

Almost surely, 2^52121257234 is an apocalyptic number.

52121257234 is a deficient number, since it is larger than the sum of its proper divisors (26060628620).

52121257234 is a wasteful number, since it uses less digits than its factorization.

52121257234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26060628619.

The product of its digits is 33600, while the sum is 34.

Adding to 52121257234 its reverse (43275212125), we get a palindrome (95396469359).

The spelling of 52121257234 in words is "fifty-two billion, one hundred twenty-one million, two hundred fifty-seven thousand, two hundred thirty-four".