51373575 has 144 divisors (see below), whose sum is σ = 112805280. Its totient is φ = 22809600.

The previous prime is 51373573. The next prime is 51373577. The reversal of 51373575 is 57537315.

It is a happy number.

51373575 is a `hidden beast` number, since 5 + 13 + 73 + 575 = 666.

It is an interprime number because it is at equal distance from previous prime (51373573) and next prime (51373577).

It is not a de Polignac number, because 51373575 - 2¹ = 51373573 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51373573) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1388457 + ... + 1388493.

It is an arithmetic number, because the mean of its divisors is an integer number (783370).

Almost surely, 2^51373575 is an apocalyptic number.

51373575 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51373575 is an abundant number, since it is smaller than the sum of its proper divisors (61431705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51373575 is a wasteful number, since it uses less digits than its factorization.

51373575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 73 counting only the distinct ones).

The product of its digits is 55125, while the sum is 36.

The square root of 51373575 is about 7167.5361875612. The cubic root of 51373575 is about 371.7462499473.

It can be divided in two parts, 513 and 73575, that added together give a cube (74088 = 42³).

The spelling of 51373575 in words is "fifty-one million, three hundred seventy-three thousand, five hundred seventy-five".