61524973 has 2 divisors, whose sum is σ = 61524974. Its totient is φ = 61524972.

The previous prime is 61524943. The next prime is 61525001. The reversal of 61524973 is 37942516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48260809 + 13264164 = 6947^2 + 3642^2 .

It is a cyclic number.

It is not a de Polignac number, because 61524973 - 2⁹ = 61524461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61524923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30762486 + 30762487.

It is an arithmetic number, because the mean of its divisors is an integer number (30762487).

Almost surely, 2^61524973 is an apocalyptic number.

It is an amenable number.

61524973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61524973 is an equidigital number, since it uses as much as digits as its factorization.

61524973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 61524973 is about 7843.7856294012. The cubic root of 61524973 is about 394.7757590658.

The spelling of 61524973 in words is "sixty-one million, five hundred twenty-four thousand, nine hundred seventy-three".