50021430 has 32 divisors (see below), whose sum is σ = 121181184. Its totient is φ = 13213536.

The previous prime is 50021407. The next prime is 50021431. The reversal of 50021430 is 3412005.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50021431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4582 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (3786912).

Almost surely, 2^50021430 is an apocalyptic number.

50021430 is an abundant number, since it is smaller than the sum of its proper divisors (71159754).

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

50021430 is a wasteful number, since it uses less digits than its factorization.

50021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15700.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 50021430 is about 7072.5829793648. The cubic root of 50021430 is about 368.4557748764.

Adding to 50021430 its reverse (3412005), we get a palindrome (53433435).

The spelling of 50021430 in words is "fifty million, twenty-one thousand, four hundred thirty".