651452 has 24 divisors (see below), whose sum is σ = 1218336. Its totient is φ = 304128.

The previous prime is 651439. The next prime is 651461. The reversal of 651452 is 254156.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 651452.

It is an unprimeable number.

651452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6668 + ... + 6764.

It is an arithmetic number, because the mean of its divisors is an integer number (50764).

2⁶⁵¹⁴⁵² is an apocalyptic number.

It is an amenable number.

651452 is a deficient number, since it is larger than the sum of its proper divisors (566884).

651452 is a wasteful number, since it uses less digits than its factorization.

651452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 651452 is about 807.1257646736. The cubic root of 651452 is about 86.6883640613.

The spelling of 651452 in words is "six hundred fifty-one thousand, four hundred fifty-two".