775248540 has 48 divisors (see below), whose sum is σ = 2368033920. Its totient is φ = 187938880.

The previous prime is 775248533. The next prime is 775248547. The reversal of 775248540 is 45842577.

It is an interprime number because it is at equal distance from previous prime (775248533) and next prime (775248547).

It is a junction number, because it is equal to n+sod(n) for n = 775248492 and 775248501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775248547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586650 + ... + 587969.

It is an arithmetic number, because the mean of its divisors is an integer number (49334040).

Almost surely, 2^775248540 is an apocalyptic number.

It is an amenable number.

775248540 is an abundant number, since it is smaller than the sum of its proper divisors (1592785380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775248540 is a wasteful number, since it uses less digits than its factorization.

775248540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174642 (or 1174640 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 42.

The square root of 775248540 is about 27843.2853664937. The cubic root of 775248540 is about 918.6434560146.

The spelling of 775248540 in words is "seven hundred seventy-five million, two hundred forty-eight thousand, five hundred forty".