5211231545 has 16 divisors (see below), whose sum is σ = 6736492560. Its totient is φ = 3847163904.

The previous prime is 5211231539. The next prime is 5211231551. The reversal of 5211231545 is 5451321125.

It is an interprime number because it is at equal distance from previous prime (5211231539) and next prime (5211231551).

It can be written as a sum of positive squares in 8 ways, for example, as 1695215929 + 3516015616 = 41173^2 + 59296^2 .

It is a cyclic number.

It is not a de Polignac number, because 5211231545 - 2⁶ = 5211231481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258677 + ... + 278093.

It is an arithmetic number, because the mean of its divisors is an integer number (421030785).

Almost surely, 2^5211231545 is an apocalyptic number.

It is an amenable number.

5211231545 is a deficient number, since it is larger than the sum of its proper divisors (1525261015).

5211231545 is a wasteful number, since it uses less digits than its factorization.

5211231545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23564.

The product of its digits is 6000, while the sum is 29.

The square root of 5211231545 is about 72188.8602555824. The cubic root of 5211231545 is about 1733.7246474950.

The spelling of 5211231545 in words is "five billion, two hundred eleven million, two hundred thirty-one thousand, five hundred forty-five".