51420411 has 24 divisors (see below), whose sum is σ = 85344480. Its totient is φ = 29223936.

The previous prime is 51420407. The next prime is 51420419. The reversal of 51420411 is 11402415.

It is not a de Polignac number, because 51420411 - 2² = 51420407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51420419) 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, 10045 + ... + 14273.

It is an arithmetic number, because the mean of its divisors is an integer number (3556020).

Almost surely, 2^51420411 is an apocalyptic number.

51420411 is a deficient number, since it is larger than the sum of its proper divisors (33924069).

51420411 is a wasteful number, since it uses less digits than its factorization.

51420411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435 (or 4432 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 51420411 is about 7170.8026747359. The cubic root of 51420411 is about 371.8591862117.

Adding to 51420411 its reverse (11402415), we get a palindrome (62822826).

The spelling of 51420411 in words is "fifty-one million, four hundred twenty thousand, four hundred eleven".