5211431555 has 16 divisors (see below), whose sum is σ = 6827134464. Its totient is φ = 3787411680.

The previous prime is 5211431551. The next prime is 5211431557. The reversal of 5211431555 is 5551341125.

It is not a de Polignac number, because 5211431555 - 2² = 5211431551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5211431551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44972 + ... + 111558.

It is an arithmetic number, because the mean of its divisors is an integer number (426695904).

Almost surely, 2^5211431555 is an apocalyptic number.

5211431555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5211431555 is a deficient number, since it is larger than the sum of its proper divisors (1615702909).

5211431555 is a wasteful number, since it uses less digits than its factorization.

5211431555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68026.

The product of its digits is 15000, while the sum is 32.

The square root of 5211431555 is about 72190.2455668354. The cubic root of 5211431555 is about 1733.7468276539.

The spelling of 5211431555 in words is "five billion, two hundred eleven million, four hundred thirty-one thousand, five hundred fifty-five".