545522040 has 320 divisors, whose sum is σ = 2132697600. Its totient is φ = 122487552.

The previous prime is 545522009. The next prime is 545522063. The reversal of 545522040 is 40225545.

545522040 is a `hidden beast` number, since 5 + 455 + 2 + 204 + 0 = 666.

It is a super-2 number, since 2×545522040² = 595188592251523200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 545521995 and 545522013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1519381 + ... + 1519739.

It is an arithmetic number, because the mean of its divisors is an integer number (6664680).

Almost surely, 2^545522040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545522040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066348800).

545522040 is an abundant number, since it is smaller than the sum of its proper divisors (1587175560).

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

545522040 is a wasteful number, since it uses less digits than its factorization.

545522040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 545522040 is about 23356.4132520385. The cubic root of 545522040 is about 817.0916401698.

Adding to 545522040 its reverse (40225545), we get a palindrome (585747585).

It can be divided in two parts, 5455 and 22040, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 545522040 in words is "five hundred forty-five million, five hundred twenty-two thousand, forty".