51475007 has 4 divisors (see below), whose sum is σ = 51494976. Its totient is φ = 51455040.

The previous prime is 51474991. The next prime is 51475013. The reversal of 51475007 is 70057415.

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 51475007 - 2⁴ = 51474991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51475027) 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, 5423 + ... + 11504.

It is an arithmetic number, because the mean of its divisors is an integer number (12873744).

Almost surely, 2^51475007 is an apocalyptic number.

51475007 is a deficient number, since it is larger than the sum of its proper divisors (19969).

51475007 is a wasteful number, since it uses less digits than its factorization.

51475007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19968.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 51475007 is about 7174.6084910607. The cubic root of 51475007 is about 371.9907477369.

The spelling of 51475007 in words is "fifty-one million, four hundred seventy-five thousand, seven".