61263493 has 2 divisors, whose sum is σ = 61263494. Its totient is φ = 61263492.

The previous prime is 61263491. The next prime is 61263497. The reversal of 61263493 is 39436216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30991489 + 30272004 = 5567^2 + 5502^2 .

It is a cyclic number.

It is not a de Polignac number, because 61263493 - 2¹ = 61263491 is a prime.

It is a super-2 number, since 2×61263493² = 7506431149122098, which contains 22 as substring.

Together with 61263491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61263491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30631746 + 30631747.

It is an arithmetic number, because the mean of its divisors is an integer number (30631747).

Almost surely, 2^61263493 is an apocalyptic number.

It is an amenable number.

61263493 is a deficient number, since it is larger than the sum of its proper divisors (1).

61263493 is an equidigital number, since it uses as much as digits as its factorization.

61263493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 61263493 is about 7827.0999099283. The cubic root of 61263493 is about 394.2157016732.

The spelling of 61263493 in words is "sixty-one million, two hundred sixty-three thousand, four hundred ninety-three".