51601023 has 8 divisors (see below), whose sum is σ = 76446000. Its totient is φ = 34400664.

The previous prime is 51601021. The next prime is 51601057. The reversal of 51601023 is 32010615.

It is not a de Polignac number, because 51601023 - 2¹ = 51601021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51600987 and 51601005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955548 + ... + 955601.

It is an arithmetic number, because the mean of its divisors is an integer number (9555750).

Almost surely, 2^51601023 is an apocalyptic number.

51601023 is a deficient number, since it is larger than the sum of its proper divisors (24844977).

51601023 is a wasteful number, since it uses less digits than its factorization.

51601023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911158 (or 1911152 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51601023 is about 7183.3852047624. The cubic root of 51601023 is about 372.2940572956.

Adding to 51601023 its reverse (32010615), we get a palindrome (83611638).

The spelling of 51601023 in words is "fifty-one million, six hundred one thousand, twenty-three".