61528711 has 2 divisors, whose sum is σ = 61528712. Its totient is φ = 61528710.

The previous prime is 61528697. The next prime is 61528717. The reversal of 61528711 is 11782516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61528711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61528717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30764355 + 30764356.

It is an arithmetic number, because the mean of its divisors is an integer number (30764356).

Almost surely, 2^61528711 is an apocalyptic number.

61528711 is a deficient number, since it is larger than the sum of its proper divisors (1).

61528711 is an equidigital number, since it uses as much as digits as its factorization.

61528711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 31.

The square root of 61528711 is about 7844.0239035842. The cubic root of 61528711 is about 394.7837538785.

The spelling of 61528711 in words is "sixty-one million, five hundred twenty-eight thousand, seven hundred eleven".