2531629 has 2 divisors, whose sum is σ = 2531630. Its totient is φ = 2531628.

The previous prime is 2531611. The next prime is 2531653. The reversal of 2531629 is 9261352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2256004 + 275625 = 1502^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531629 - 2⁹ = 2531117 is a prime.

2531629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2531597 and 2531606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265814 + 1265815.

It is an arithmetic number, because the mean of its divisors is an integer number (1265815).

2^2531629 is an apocalyptic number.

It is an amenable number.

2531629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531629 is an equidigital number, since it uses as much as digits as its factorization.

2531629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 2531629 is about 1591.1093614205. The cubic root of 2531629 is about 136.2908459867.

It can be divided in two parts, 2531 and 629, that added together give a triangular number (3160 = T₇₉).

The spelling of 2531629 in words is "two million, five hundred thirty-one thousand, six hundred twenty-nine".