51962340 has 72 divisors (see below), whose sum is σ = 153619200. Its totient is φ = 13121856.

The previous prime is 51962327. The next prime is 51962341. The reversal of 51962340 is 4326915.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 51962298 and 51962307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51962341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20461 + ... + 22859.

It is an arithmetic number, because the mean of its divisors is an integer number (2133600).

Almost surely, 2^51962340 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 51962340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76809600).

51962340 is an abundant number, since it is smaller than the sum of its proper divisors (101656860).

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

51962340 is a wasteful number, since it uses less digits than its factorization.

51962340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449 (or 2428 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 51962340 is about 7208.4908267959. The cubic root of 51962340 is about 373.1609872728.

The spelling of 51962340 in words is "fifty-one million, nine hundred sixty-two thousand, three hundred forty".