51553007 has 4 divisors (see below), whose sum is σ = 56239656. Its totient is φ = 46866360.

The previous prime is 51552953. The next prime is 51553009. The reversal of 51553007 is 70035515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51553007 - 2¹⁴ = 51536623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51553009) 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, 2343308 + ... + 2343329.

It is an arithmetic number, because the mean of its divisors is an integer number (14059914).

Almost surely, 2^51553007 is an apocalyptic number.

51553007 is a deficient number, since it is larger than the sum of its proper divisors (4686649).

51553007 is a wasteful number, since it uses less digits than its factorization.

51553007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686648.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 51553007 is about 7180.0422700706. The cubic root of 51553007 is about 372.1785452509.

The spelling of 51553007 in words is "fifty-one million, five hundred fifty-three thousand, seven".