87553069 has 2 divisors, whose sum is σ = 87553070. Its totient is φ = 87553068.

The previous prime is 87553027. The next prime is 87553183. The reversal of 87553069 is 96035578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58339044 + 29214025 = 7638^2 + 5405^2 .

It is a cyclic number.

It is not a de Polignac number, because 87553069 - 2¹¹ = 87551021 is a prime.

It is a super-2 number, since 2×87553069² = 15331079782637522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87553369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43776534 + 43776535.

It is an arithmetic number, because the mean of its divisors is an integer number (43776535).

Almost surely, 2^87553069 is an apocalyptic number.

It is an amenable number.

87553069 is a deficient number, since it is larger than the sum of its proper divisors (1).

87553069 is an equidigital number, since it uses as much as digits as its factorization.

87553069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 87553069 is about 9356.9796943244. The cubic root of 87553069 is about 444.0417354513.

The spelling of 87553069 in words is "eighty-seven million, five hundred fifty-three thousand, sixty-nine".