240648551 has 24 divisors (see below), whose sum is σ = 289801680. Its totient is φ = 198443520.

The previous prime is 240648539. The next prime is 240648631. The reversal of 240648551 is 155846042.

It is not a de Polignac number, because 240648551 - 2¹⁴ = 240632167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240648151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91511 + ... + 94103.

It is an arithmetic number, because the mean of its divisors is an integer number (12075070).

Almost surely, 2^240648551 is an apocalyptic number.

240648551 is a deficient number, since it is larger than the sum of its proper divisors (49153129).

240648551 is a wasteful number, since it uses less digits than its factorization.

240648551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687 (or 2676 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 240648551 is about 15512.8511563800. The cubic root of 240648551 is about 622.0057751486.

The spelling of 240648551 in words is "two hundred forty million, six hundred forty-eight thousand, five hundred fifty-one".