652009451 has 4 divisors (see below), whose sum is σ = 680357712. Its totient is φ = 623661192.

The previous prime is 652009417. The next prime is 652009471. The reversal of 652009451 is 154900256.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-652009451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652009411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14174096 + ... + 14174141.

It is an arithmetic number, because the mean of its divisors is an integer number (170089428).

Almost surely, 2^652009451 is an apocalyptic number.

652009451 is a deficient number, since it is larger than the sum of its proper divisors (28348261).

652009451 is a wasteful number, since it uses less digits than its factorization.

652009451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28348260.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 652009451 is about 25534.4757337996. The cubic root of 652009451 is about 867.1308357906.

The spelling of 652009451 in words is "six hundred fifty-two million, nine thousand, four hundred fifty-one".