987254101 has 2 divisors, whose sum is σ = 987254102. Its totient is φ = 987254100.

The previous prime is 987254087. The next prime is 987254111. The reversal of 987254101 is 101452789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547513201 + 439740900 = 23399^2 + 20970^2 .

It is an emirp because it is prime and its reverse (101452789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987254101 - 2¹¹ = 987252053 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987254111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493627050 + 493627051.

It is an arithmetic number, because the mean of its divisors is an integer number (493627051).

Almost surely, 2^987254101 is an apocalyptic number.

It is an amenable number.

987254101 is a deficient number, since it is larger than the sum of its proper divisors (1).

987254101 is an equidigital number, since it uses as much as digits as its factorization.

987254101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 987254101 is about 31420.5999465319. The cubic root of 987254101 is about 995.7331872020.

The spelling of 987254101 in words is "nine hundred eighty-seven million, two hundred fifty-four thousand, one hundred one".