101520487 has 2 divisors, whose sum is σ = 101520488. Its totient is φ = 101520486.

The previous prime is 101520479. The next prime is 101520539. The reversal of 101520487 is 784025101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101520487 - 2³ = 101520479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101520407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50760243 + 50760244.

It is an arithmetic number, because the mean of its divisors is an integer number (50760244).

Almost surely, 2^101520487 is an apocalyptic number.

101520487 is a deficient number, since it is larger than the sum of its proper divisors (1).

101520487 is an equidigital number, since it uses as much as digits as its factorization.

101520487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 101520487 is about 10075.7375412423. The cubic root of 101520487 is about 466.4995517841.

Adding to 101520487 its reverse (784025101), we get a palindrome (885545588).

The spelling of 101520487 in words is "one hundred one million, five hundred twenty thousand, four hundred eighty-seven".