5551242731 has 2 divisors, whose sum is σ = 5551242732. Its totient is φ = 5551242730.

The previous prime is 5551242703. The next prime is 5551242743. The reversal of 5551242731 is 1372421555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5551242731 is a prime.

It is a super-2 number, since 2×5551242731² = 61632591716960676722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5551242691 and 5551242700.

It is not a weakly prime, because it can be changed into another prime (5551242761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775621365 + 2775621366.

It is an arithmetic number, because the mean of its divisors is an integer number (2775621366).

Almost surely, 2^5551242731 is an apocalyptic number.

5551242731 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551242731 is an equidigital number, since it uses as much as digits as its factorization.

5551242731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 35.

The square root of 5551242731 is about 74506.6623262645. The cubic root of 5551242731 is about 1770.6391906604.

The spelling of 5551242731 in words is "five billion, five hundred fifty-one million, two hundred forty-two thousand, seven hundred thirty-one".