61387059 has 4 divisors (see below), whose sum is σ = 81849416. Its totient is φ = 40924704.

The previous prime is 61387057. The next prime is 61387061. The reversal of 61387059 is 95078316.

61387059 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61387057) and next prime (61387061).

It is not a de Polignac number, because 61387059 - 2¹ = 61387057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61387057) 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 in 3 ways as a sum of consecutive naturals, for example, 10231174 + ... + 10231179.

It is an arithmetic number, because the mean of its divisors is an integer number (20462354).

Almost surely, 2^61387059 is an apocalyptic number.

61387059 is a deficient number, since it is larger than the sum of its proper divisors (20462357).

61387059 is a wasteful number, since it uses less digits than its factorization.

61387059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20462356.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 61387059 is about 7834.9894065021. The cubic root of 61387059 is about 394.4805627502.

The spelling of 61387059 in words is "sixty-one million, three hundred eighty-seven thousand, fifty-nine".