51973401 has 4 divisors (see below), whose sum is σ = 69297872. Its totient is φ = 34648932.

The previous prime is 51973381. The next prime is 51973409. The reversal of 51973401 is 10437915.

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 51973401 - 2⁹ = 51972889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51973409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8662231 + ... + 8662236.

It is an arithmetic number, because the mean of its divisors is an integer number (17324468).

Almost surely, 2^51973401 is an apocalyptic number.

It is an amenable number.

51973401 is a deficient number, since it is larger than the sum of its proper divisors (17324471).

51973401 is a wasteful number, since it uses less digits than its factorization.

51973401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17324470.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 51973401 is about 7209.2580062029. The cubic root of 51973401 is about 373.1874631195.

It can be divided in two parts, 519 and 73401, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 51973401 in words is "fifty-one million, nine hundred seventy-three thousand, four hundred one".