525307987 has 2 divisors, whose sum is σ = 525307988. Its totient is φ = 525307986.

The previous prime is 525307957. The next prime is 525308033. The reversal of 525307987 is 789703525.

It is an a-pointer prime, because the next prime (525308033) can be obtained adding 525307987 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525307987 - 2⁷ = 525307859 is a prime.

It is not a weakly prime, because it can be changed into another prime (525307957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262653993 + 262653994.

It is an arithmetic number, because the mean of its divisors is an integer number (262653994).

Almost surely, 2^525307987 is an apocalyptic number.

525307987 is a deficient number, since it is larger than the sum of its proper divisors (1).

525307987 is an equidigital number, since it uses as much as digits as its factorization.

525307987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 525307987 is about 22919.5983167245. The cubic root of 525307987 is about 806.8720429836.

The spelling of 525307987 in words is "five hundred twenty-five million, three hundred seven thousand, nine hundred eighty-seven".