421053554 has 4 divisors (see below), whose sum is σ = 631580334. Its totient is φ = 210526776.

The previous prime is 421053551. The next prime is 421053557. The reversal of 421053554 is 455350124.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (421053551) and next prime (421053557).

It can be written as a sum of positive squares in only one way, i.e., 252651025 + 168402529 = 15895^2 + 12977^2 .

It is not an unprimeable number, because it can be changed into a prime (421053551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105263387 + ... + 105263390.

Almost surely, 2^421053554 is an apocalyptic number.

421053554 is a deficient number, since it is larger than the sum of its proper divisors (210526780).

421053554 is a wasteful number, since it uses less digits than its factorization.

421053554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210526779.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 421053554 is about 20519.5895183115. The cubic root of 421053554 is about 749.5129008996.

The spelling of 421053554 in words is "four hundred twenty-one million, fifty-three thousand, five hundred fifty-four".