787552081 has 4 divisors (see below), whose sum is σ = 833878692. Its totient is φ = 741225472.

The previous prime is 787552061. The next prime is 787552097. The reversal of 787552081 is 180255787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180255787 = 761 ⋅236867.

It can be written as a sum of positive squares in 2 ways, for example, as 586366225 + 201185856 = 24215^2 + 14184^2 .

It is a cyclic number.

It is not a de Polignac number, because 787552081 - 2⁷ = 787551953 is a prime.

It is a super-2 number, since 2×787552081² = 1240476560574861122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787552061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23163280 + ... + 23163313.

It is an arithmetic number, because the mean of its divisors is an integer number (208469673).

Almost surely, 2^787552081 is an apocalyptic number.

It is an amenable number.

787552081 is a deficient number, since it is larger than the sum of its proper divisors (46326611).

787552081 is a wasteful number, since it uses less digits than its factorization.

787552081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46326610.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 787552081 is about 28063.3583343120. The cubic root of 787552081 is about 923.4777322708.

The spelling of 787552081 in words is "seven hundred eighty-seven million, five hundred fifty-two thousand, eighty-one".