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52787485 = 510557497
BaseRepresentation
bin1100100101011…
…1100100011101
310200022212211001
43021113210131
5102003144420
65123230301
71210454242
oct311274435
9120285731
1052787485
1127885023
1215818391
13ac230ca
1470215c9
15497ab0a
hex325791d

52787485 has 4 divisors (see below), whose sum is σ = 63344988. Its totient is φ = 42229984.

The previous prime is 52787479. The next prime is 52787489. The reversal of 52787485 is 58478725.

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 16088121 + 36699364 = 4011^2 + 6058^2 .

It is a cyclic number.

It is not a de Polignac number, because 52787485 - 217 = 52656413 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 (52787489) 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, 5278744 + ... + 5278753.

It is an arithmetic number, because the mean of its divisors is an integer number (15836247).

Almost surely, 252787485 is an apocalyptic number.

It is an amenable number.

52787485 is a deficient number, since it is larger than the sum of its proper divisors (10557503).

52787485 is a wasteful number, since it uses less digits than its factorization.

52787485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557502.

The product of its digits is 627200, while the sum is 46.

The square root of 52787485 is about 7265.4996387035. The cubic root of 52787485 is about 375.1258481316.

The spelling of 52787485 in words is "fifty-two million, seven hundred eighty-seven thousand, four hundred eighty-five".

Divisors: 1 5 10557497 52787485