61523477 has 2 divisors, whose sum is σ = 61523478. Its totient is φ = 61523476.

The previous prime is 61523467. The next prime is 61523479. The reversal of 61523477 is 77432516.

61523477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61324561 + 198916 = 7831^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 61523477 - 2⁴ = 61523461 is a prime.

Together with 61523479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61523479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30761738 + 30761739.

It is an arithmetic number, because the mean of its divisors is an integer number (30761739).

Almost surely, 2^61523477 is an apocalyptic number.

It is an amenable number.

61523477 is a deficient number, since it is larger than the sum of its proper divisors (1).

61523477 is an equidigital number, since it uses as much as digits as its factorization.

61523477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 61523477 is about 7843.6902667048. The cubic root of 61523477 is about 394.7725593390.

The spelling of 61523477 in words is "sixty-one million, five hundred twenty-three thousand, four hundred seventy-seven".