1455421550 has 48 divisors (see below), whose sum is σ = 3055050000. Its totient is φ = 510988800.

The previous prime is 1455421549. The next prime is 1455421553. The reversal of 1455421550 is 551245541.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455421553) 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, 29675 + ... + 61574.

It is an arithmetic number, because the mean of its divisors is an integer number (63646875).

Almost surely, 2^1455421550 is an apocalyptic number.

1455421550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1455421550 is an abundant number, since it is smaller than the sum of its proper divisors (1599628450).

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

1455421550 is a wasteful number, since it uses less digits than its factorization.

1455421550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91301 (or 91296 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 1455421550 is about 38149.9875491461. The cubic root of 1455421550 is about 1133.2601053224.

The spelling of 1455421550 in words is "one billion, four hundred fifty-five million, four hundred twenty-one thousand, five hundred fifty".