651420253 has 8 divisors (see below), whose sum is σ = 716930496. Its totient is φ = 586958400.

The previous prime is 651420251. The next prime is 651420293. The reversal of 651420253 is 352024156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 651420253 - 2¹ = 651420251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651420251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260793 + ... + 263278.

It is an arithmetic number, because the mean of its divisors is an integer number (89616312).

Almost surely, 2^651420253 is an apocalyptic number.

It is an amenable number.

651420253 is a deficient number, since it is larger than the sum of its proper divisors (65510243).

651420253 is a wasteful number, since it uses less digits than its factorization.

651420253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524195.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 651420253 is about 25522.9358225107. The cubic root of 651420253 is about 866.8695585303.

The spelling of 651420253 in words is "six hundred fifty-one million, four hundred twenty thousand, two hundred fifty-three".