55265490 has 192 divisors, whose sum is σ = 179953920. Its totient is φ = 11967264.

The previous prime is 55265479. The next prime is 55265491. The reversal of 55265490 is 9456255.

55265490 is a `hidden beast` number, since 552 + 65 + 49 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55265491) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2908701 + ... + 2908719.

It is an arithmetic number, because the mean of its divisors is an integer number (937260).

Almost surely, 2^55265490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55265490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89976960).

55265490 is an abundant number, since it is smaller than the sum of its proper divisors (124688430).

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

55265490 is an equidigital number, since it uses as much as digits as its factorization.

55265490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 55265490 is about 7434.0762707952. The cubic root of 55265490 is about 380.9061707068.

It can be divided in two parts, 55265 and 490, that added together give a palindrome (55755).

The spelling of 55265490 in words is "fifty-five million, two hundred sixty-five thousand, four hundred ninety".