5133621251 has 4 divisors (see below), whose sum is σ = 5600314104. Its totient is φ = 4666928400.

The previous prime is 5133621239. The next prime is 5133621281. The reversal of 5133621251 is 1521263315.

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

It is a cyclic number.

It is not a de Polignac number, because 5133621251 - 2⁶ = 5133621187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5133621221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233346410 + ... + 233346431.

It is an arithmetic number, because the mean of its divisors is an integer number (1400078526).

Almost surely, 2^5133621251 is an apocalyptic number.

5133621251 is a deficient number, since it is larger than the sum of its proper divisors (466692853).

5133621251 is a wasteful number, since it uses less digits than its factorization.

5133621251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466692852.

The product of its digits is 5400, while the sum is 29.

The square root of 5133621251 is about 71649.2934438296. The cubic root of 5133621251 is about 1725.0748410853.

Adding to 5133621251 its reverse (1521263315), we get a palindrome (6654884566).

The spelling of 5133621251 in words is "five billion, one hundred thirty-three million, six hundred twenty-one thousand, two hundred fifty-one".