651619452 has 48 divisors (see below), whose sum is σ = 1756242432. Its totient is φ = 185844480.

The previous prime is 651619439. The next prime is 651619453. The reversal of 651619452 is 254916156.

It is a self number, because there is not a number n which added to its sum of digits gives 651619452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651619453) 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, 142948 + ... + 147435.

It is an arithmetic number, because the mean of its divisors is an integer number (36588384).

Almost surely, 2^651619452 is an apocalyptic number.

It is an amenable number.

651619452 is an abundant number, since it is smaller than the sum of its proper divisors (1104622980).

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

651619452 is a wasteful number, since it uses less digits than its factorization.

651619452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290418 (or 290416 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 651619452 is about 25526.8378770266. The cubic root of 651619452 is about 866.9579100720.

The spelling of 651619452 in words is "six hundred fifty-one million, six hundred nineteen thousand, four hundred fifty-two".