51941397 has 4 divisors (see below), whose sum is σ = 69255200. Its totient is φ = 34627596.

The previous prime is 51941387. The next prime is 51941423. The reversal of 51941397 is 79314915.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51941397 - 2¹⁶ = 51875861 is a prime.

It is a super-3 number, since 3×51941397³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51941327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8656897 + ... + 8656902.

It is an arithmetic number, because the mean of its divisors is an integer number (17313800).

Almost surely, 2^51941397 is an apocalyptic number.

It is an amenable number.

51941397 is a deficient number, since it is larger than the sum of its proper divisors (17313803).

51941397 is a wasteful number, since it uses less digits than its factorization.

51941397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17313802.

The product of its digits is 34020, while the sum is 39.

The square root of 51941397 is about 7207.0380184928. The cubic root of 51941397 is about 373.1108473655.

The spelling of 51941397 in words is "fifty-one million, nine hundred forty-one thousand, three hundred ninety-seven".