420552550 has 48 divisors (see below), whose sum is σ = 864230400. Its totient is φ = 150976800.

The previous prime is 420552547. The next prime is 420552553. The reversal of 420552550 is 55255024.

It is an interprime number because it is at equal distance from previous prime (420552547) and next prime (420552553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420552553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38611 + ... + 48289.

It is an arithmetic number, because the mean of its divisors is an integer number (18004800).

Almost surely, 2^420552550 is an apocalyptic number.

420552550 is an abundant number, since it is smaller than the sum of its proper divisors (443677850).

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

420552550 is a wasteful number, since it uses less digits than its factorization.

420552550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781 (or 9776 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 420552550 is about 20507.3779406340. The cubic root of 420552550 is about 749.2155056368.

The spelling of 420552550 in words is "four hundred twenty million, five hundred fifty-two thousand, five hundred fifty".