51948420 has 24 divisors (see below), whose sum is σ = 145455744. Its totient is φ = 13852896.

The previous prime is 51948409. The next prime is 51948431. The reversal of 51948420 is 2484915.

It is an interprime number because it is at equal distance from previous prime (51948409) and next prime (51948431).

It is an unprimeable 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, 432844 + ... + 432963.

It is an arithmetic number, because the mean of its divisors is an integer number (6060656).

Almost surely, 2^51948420 is an apocalyptic number.

It is an amenable number.

51948420 is an abundant number, since it is smaller than the sum of its proper divisors (93507324).

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

51948420 is a wasteful number, since it uses less digits than its factorization.

51948420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865819 (or 865817 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 51948420 is about 7207.5252340869. The cubic root of 51948420 is about 373.1276627224.

The spelling of 51948420 in words is "fifty-one million, nine hundred forty-eight thousand, four hundred twenty".