51948036 has 90 divisors (see below), whose sum is σ = 153444382. Its totient is φ = 14817600.

The previous prime is 51948011. The next prime is 51948047. The reversal of 51948036 is 63084915.

It can be written as a sum of positive squares in only one way, i.e., 49787136 + 2160900 = 7056^2 + 1470^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 86136 + ... + 86736.

Almost surely, 2^51948036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51948036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76722191).

51948036 is an abundant number, since it is smaller than the sum of its proper divisors (101496346).

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

51948036 is a wasteful number, since it uses less digits than its factorization.

51948036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 51948036 is about 7207.4985952132. The cubic root of 51948036 is about 373.1267433401.

The spelling of 51948036 in words is "fifty-one million, nine hundred forty-eight thousand, thirty-six".