51142601 has 4 divisors (see below), whose sum is σ = 51240912. Its totient is φ = 51044292.

The previous prime is 51142577. The next prime is 51142607. The reversal of 51142601 is 10624115.

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 a cyclic number.

It is not a de Polignac number, because 51142601 - 2¹⁸ = 50880457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51142607) 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, 48371 + ... + 49416.

It is an arithmetic number, because the mean of its divisors is an integer number (12810228).

Almost surely, 2^51142601 is an apocalyptic number.

It is an amenable number.

51142601 is a deficient number, since it is larger than the sum of its proper divisors (98311).

51142601 is an equidigital number, since it uses as much as digits as its factorization.

51142601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98310.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51142601 is about 7151.4055261885. The cubic root of 51142601 is about 371.1882930540.

Adding to 51142601 its reverse (10624115), we get a palindrome (61766716).

The spelling of 51142601 in words is "fifty-one million, one hundred forty-two thousand, six hundred one".