451521652 has 6 divisors (see below), whose sum is σ = 790162898. Its totient is φ = 225760824.

The previous prime is 451521617. The next prime is 451521661. The reversal of 451521652 is 256125154.

It can be written as a sum of positive squares in only one way, i.e., 228795876 + 222725776 = 15126^2 + 14924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56440203 + ... + 56440210.

Almost surely, 2^451521652 is an apocalyptic number.

It is an amenable number.

451521652 is a deficient number, since it is larger than the sum of its proper divisors (338641246).

451521652 is a wasteful number, since it uses less digits than its factorization.

451521652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112880417 (or 112880415 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 451521652 is about 21249.0388488515. The cubic root of 451521652 is about 767.1722060410.

The spelling of 451521652 in words is "four hundred fifty-one million, five hundred twenty-one thousand, six hundred fifty-two".