1651297752 has 288 divisors, whose sum is σ = 5300502480. Its totient is φ = 478690560.

The previous prime is 1651297727. The next prime is 1651297759. The reversal of 1651297752 is 2577921561.

1651297752 is a `hidden beast` number, since 16 + 512 + 9 + 77 + 52 = 666.

1651297752 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1651297698 and 1651297707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651297759) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9123102 + ... + 9123282.

Almost surely, 2^1651297752 is an apocalyptic number.

1651297752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1651297752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650251240).

1651297752 is an abundant number, since it is smaller than the sum of its proper divisors (3649204728).

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

1651297752 is a wasteful number, since it uses less digits than its factorization.

1651297752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 218 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 1651297752 is about 40636.1631062776. The cubic root of 1651297752 is about 1181.9754690985.

The spelling of 1651297752 in words is "one billion, six hundred fifty-one million, two hundred ninety-seven thousand, seven hundred fifty-two".