5101645 has 4 divisors (see below), whose sum is σ = 6121980. Its totient is φ = 4081312.

The previous prime is 5101643. The next prime is 5101661. The reversal of 5101645 is 5461015.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1153476 + 3948169 = 1074^2 + 1987^2 .

It is a cyclic number.

It is not a de Polignac number, because 5101645 - 2¹ = 5101643 is a prime.

It is a super-3 number, since 3×5101645³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5101643) 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, 510160 + ... + 510169.

It is an arithmetic number, because the mean of its divisors is an integer number (1530495).

Almost surely, 2^5101645 is an apocalyptic number.

It is an amenable number.

5101645 is a deficient number, since it is larger than the sum of its proper divisors (1020335).

5101645 is a wasteful number, since it uses less digits than its factorization.

5101645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020334.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 5101645 is about 2258.6821378848. The cubic root of 5101645 is about 172.1485668775.

The spelling of 5101645 in words is "five million, one hundred one thousand, six hundred forty-five".