421550153 has 2 divisors, whose sum is σ = 421550154. Its totient is φ = 421550152.

The previous prime is 421550149. The next prime is 421550167. The reversal of 421550153 is 351055124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341214784 + 80335369 = 18472^2 + 8963^2 .

It is a cyclic number.

It is not a de Polignac number, because 421550153 - 2² = 421550149 is a prime.

It is not a weakly prime, because it can be changed into another prime (421550653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210775076 + 210775077.

It is an arithmetic number, because the mean of its divisors is an integer number (210775077).

Almost surely, 2^421550153 is an apocalyptic number.

It is an amenable number.

421550153 is a deficient number, since it is larger than the sum of its proper divisors (1).

421550153 is an equidigital number, since it uses as much as digits as its factorization.

421550153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 421550153 is about 20531.6865600466. The cubic root of 421550153 is about 749.8074486436.

The spelling of 421550153 in words is "four hundred twenty-one million, five hundred fifty thousand, one hundred fifty-three".