5121783551 has 4 divisors (see below), whose sum is σ = 5121936600. Its totient is φ = 5121630504.

The previous prime is 5121783547. The next prime is 5121783553. The reversal of 5121783551 is 1553871215.

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 5121783551 - 2² = 5121783547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121783553) 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, 2381 + ... + 101238.

It is an arithmetic number, because the mean of its divisors is an integer number (1280484150).

Almost surely, 2^5121783551 is an apocalyptic number.

5121783551 is a deficient number, since it is larger than the sum of its proper divisors (153049).

5121783551 is a wasteful number, since it uses less digits than its factorization.

5121783551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153048.

The product of its digits is 42000, while the sum is 38.

The square root of 5121783551 is about 71566.6371363081. The cubic root of 5121783551 is about 1723.7478612989.

The spelling of 5121783551 in words is "five billion, one hundred twenty-one million, seven hundred eighty-three thousand, five hundred fifty-one".