87725051 has 2 divisors, whose sum is σ = 87725052. Its totient is φ = 87725050.

The previous prime is 87725047. The next prime is 87725063. The reversal of 87725051 is 15052778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87725051 - 2² = 87725047 is a prime.

It is not a weakly prime, because it can be changed into another prime (87725021) 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, 43862525 + 43862526.

It is an arithmetic number, because the mean of its divisors is an integer number (43862526).

Almost surely, 2^87725051 is an apocalyptic number.

87725051 is a deficient number, since it is larger than the sum of its proper divisors (1).

87725051 is an equidigital number, since it uses as much as digits as its factorization.

87725051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 87725051 is about 9366.1652238256. The cubic root of 87725051 is about 444.3322915601.

The spelling of 87725051 in words is "eighty-seven million, seven hundred twenty-five thousand, fifty-one".