51946464 has 48 divisors (see below), whose sum is σ = 136736208. Its totient is φ = 17267712.

The previous prime is 51946459. The next prime is 51946469. The reversal of 51946464 is 46464915.

It is an interprime number because it is at equal distance from previous prime (51946459) and next prime (51946469).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51946469) by changing a digit.

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, 58794 + ... + 59670.

It is an arithmetic number, because the mean of its divisors is an integer number (2848671).

Almost surely, 2^51946464 is an apocalyptic number.

It is an amenable number.

51946464 is an abundant number, since it is smaller than the sum of its proper divisors (84789744).

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

51946464 is a wasteful number, since it uses less digits than its factorization.

51946464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1499 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 51946464 is about 7207.3895412972. The cubic root of 51946464 is about 373.1229795715.

The spelling of 51946464 in words is "fifty-one million, nine hundred forty-six thousand, four hundred sixty-four".