53405629 has 2 divisors, whose sum is σ = 53405630. Its totient is φ = 53405628.

The previous prime is 53405621. The next prime is 53405663. The reversal of 53405629 is 92650435.

It is an a-pointer prime, because the next prime (53405663) can be obtained adding 53405629 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34786404 + 18619225 = 5898^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 53405629 - 2³ = 53405621 is a prime.

It is a super-2 number, since 2×53405629² = 5704322417771282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53405594 and 53405603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53405621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26702814 + 26702815.

It is an arithmetic number, because the mean of its divisors is an integer number (26702815).

Almost surely, 2^53405629 is an apocalyptic number.

It is an amenable number.

53405629 is a deficient number, since it is larger than the sum of its proper divisors (1).

53405629 is an equidigital number, since it uses as much as digits as its factorization.

53405629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 53405629 is about 7307.9155030693. The cubic root of 53405629 is about 376.5844168267.

The spelling of 53405629 in words is "fifty-three million, four hundred five thousand, six hundred twenty-nine".