51641398 has 8 divisors (see below), whose sum is σ = 78923808. Its totient is φ = 25333464.

The previous prime is 51641347. The next prime is 51641437. The reversal of 51641398 is 89314615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243486 + ... + 243697.

It is an arithmetic number, because the mean of its divisors is an integer number (9865476).

Almost surely, 2^51641398 is an apocalyptic number.

51641398 is a deficient number, since it is larger than the sum of its proper divisors (27282410).

51641398 is a wasteful number, since it uses less digits than its factorization.

51641398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487238.

The product of its digits is 25920, while the sum is 37.

The square root of 51641398 is about 7186.1949597823. The cubic root of 51641398 is about 372.3911319464.

It can be divided in two parts, 516 and 41398, that added together give a palindrome (41914).

The spelling of 51641398 in words is "fifty-one million, six hundred forty-one thousand, three hundred ninety-eight".