5101531 has 2 divisors, whose sum is σ = 5101532. Its totient is φ = 5101530.

The previous prime is 5101529. The next prime is 5101541. The reversal of 5101531 is 1351015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5101531 - 2¹ = 5101529 is a prime.

It is a super-2 number, since 2×5101531² = 52051237087922, which contains 22 as substring.

Together with 5101529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5101501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550765 + 2550766.

It is an arithmetic number, because the mean of its divisors is an integer number (2550766).

Almost surely, 2^5101531 is an apocalyptic number.

5101531 is the 1429-th centered pentagonal number.

5101531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5101531 is an equidigital number, since it uses as much as digits as its factorization.

5101531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 5101531 is about 2258.6569017892. The cubic root of 5101531 is about 172.1472846059.

Adding to 5101531 its reverse (1351015), we get a palindrome (6452546).

The spelling of 5101531 in words is "five million, one hundred one thousand, five hundred thirty-one".