610421550 has 192 divisors, whose sum is σ = 1732389120. Its totient is φ = 141281280.

The previous prime is 610421521. The next prime is 610421557. The reversal of 610421550 is 55124016.

It is a super-2 number, since 2×610421550² = 745228937408805000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 610421550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610421557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2083204 + ... + 2083496.

It is an arithmetic number, because the mean of its divisors is an integer number (9022860).

Almost surely, 2^610421550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 610421550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866194560).

610421550 is an abundant number, since it is smaller than the sum of its proper divisors (1121967570).

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

610421550 is a wasteful number, since it uses less digits than its factorization.

610421550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 610421550 is about 24706.7106268722. The cubic root of 610421550 is about 848.2879263984.

Adding to 610421550 its reverse (55124016), we get a palindrome (665545566).

The spelling of 610421550 in words is "six hundred ten million, four hundred twenty-one thousand, five hundred fifty".