651102540 has 48 divisors (see below), whose sum is σ = 1988824320. Its totient is φ = 157842880.

The previous prime is 651102539. The next prime is 651102541. The reversal of 651102540 is 45201156.

It is an interprime number because it is at equal distance from previous prime (651102539) and next prime (651102541).

It is a self number, because there is not a number n which added to its sum of digits gives 651102540.

It is not an unprimeable number, because it can be changed into a prime (651102541) 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, 492600 + ... + 493919.

It is an arithmetic number, because the mean of its divisors is an integer number (41433840).

Almost surely, 2^651102540 is an apocalyptic number.

651102540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

651102540 is an abundant number, since it is smaller than the sum of its proper divisors (1337721780).

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

651102540 is a wasteful number, since it uses less digits than its factorization.

651102540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986542 (or 986540 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 651102540 is about 25516.7109949539. The cubic root of 651102540 is about 866.7286047121.

Adding to 651102540 its reverse (45201156), we get a palindrome (696303696).

The spelling of 651102540 in words is "six hundred fifty-one million, one hundred two thousand, five hundred forty".