51552001 has 4 divisors (see below), whose sum is σ = 51592752. Its totient is φ = 51511252.

The previous prime is 51551971. The next prime is 51552019. The reversal of 51552001 is 10025515.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10025515 = 5 ⋅2005103.

It is a cyclic number.

It is not a de Polignac number, because 51552001 - 2⁷ = 51551873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51552001.

It is not an unprimeable number, because it can be changed into a prime (51552071) 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, 18415 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (12898188).

Almost surely, 2^51552001 is an apocalyptic number.

It is an amenable number.

51552001 is a deficient number, since it is larger than the sum of its proper divisors (40751).

51552001 is a wasteful number, since it uses less digits than its factorization.

51552001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40750.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 51552001 is about 7179.9722144309. The cubic root of 51552001 is about 372.1761243507.

Adding to 51552001 its reverse (10025515), we get a palindrome (61577516).

The spelling of 51552001 in words is "fifty-one million, five hundred fifty-two thousand, one".