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52257740 = 2255574691
BaseRepresentation
bin1100011101011…
…0001111001100
310122022222010212
43013112033030
5101334221430
65104021552
71203116633
oct307261714
9118288125
1052257740
1127553017
12156018b8
13aa98c52
146d2451a
1548c3b95
hex31d63cc

52257740 has 24 divisors (see below), whose sum is σ = 109961712. Its totient is φ = 20861120.

The previous prime is 52257731. The next prime is 52257757. The reversal of 52257740 is 4775225.

It is a junction number, because it is equal to n+sod(n) for n = 52257697 and 52257706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8795 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (4581738).

Almost surely, 252257740 is an apocalyptic number.

It is an amenable number.

52257740 is an abundant number, since it is smaller than the sum of its proper divisors (57703972).

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

52257740 is a wasteful number, since it uses less digits than its factorization.

52257740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257 (or 5255 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 52257740 is about 7228.9515145697. The cubic root of 52257740 is about 373.8667774525.

The spelling of 52257740 in words is "fifty-two million, two hundred fifty-seven thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 557 1114 2228 2785 4691 5570 9382 11140 18764 23455 46910 93820 2612887 5225774 10451548 13064435 26128870 52257740