51902046 has 80 divisors (see below), whose sum is σ = 136615776. Its totient is φ = 14416704.

The previous prime is 51902027. The next prime is 51902047. The reversal of 51902046 is 64020915.

It is a super-2 number, since 2×51902046² = 5387644757972232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51902047) 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 39 ways as a sum of consecutive naturals, for example, 41340 + ... + 42576.

Almost surely, 2^51902046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51902046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68307888).

51902046 is an abundant number, since it is smaller than the sum of its proper divisors (84713730).

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

51902046 is a wasteful number, since it uses less digits than its factorization.

51902046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51902046 is about 7204.3074615122. The cubic root of 51902046 is about 373.0166001616.

The spelling of 51902046 in words is "fifty-one million, nine hundred two thousand, forty-six".