5111231501 has 2 divisors, whose sum is σ = 5111231502. Its totient is φ = 5111231500.

The previous prime is 5111231431. The next prime is 5111231539. The reversal of 5111231501 is 1051321115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4716255625 + 394975876 = 68675^2 + 19874^2 .

It is a cyclic number.

It is not a de Polignac number, because 5111231501 - 2¹⁰ = 5111230477 is a prime.

It is a super-3 number, since 3×5111231501³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5111231561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555615750 + 2555615751.

It is an arithmetic number, because the mean of its divisors is an integer number (2555615751).

Almost surely, 2^5111231501 is an apocalyptic number.

It is an amenable number.

5111231501 is a deficient number, since it is larger than the sum of its proper divisors (1).

5111231501 is an equidigital number, since it uses as much as digits as its factorization.

5111231501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 5111231501 is about 71492.8772745929. The cubic root of 5111231501 is about 1722.5632753060.

Adding to 5111231501 its reverse (1051321115), we get a palindrome (6162552616).

The spelling of 5111231501 in words is "five billion, one hundred eleven million, two hundred thirty-one thousand, five hundred one".