1550898 has 12 divisors (see below), whose sum is σ = 3360318. Its totient is φ = 516960.

The previous prime is 1550897. The next prime is 1550947. The reversal of 1550898 is 8980551.

It can be written as a sum of positive squares in only one way, i.e., 1505529 + 45369 = 1227^2 + 213^2 .

It is not an unprimeable number, because it can be changed into a prime (1550897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43063 + ... + 43098.

2^1550898 is an apocalyptic number.

1550898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1550898 is an abundant number, since it is smaller than the sum of its proper divisors (1809420).

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

1550898 is a wasteful number, since it uses less digits than its factorization.

1550898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86169 (or 86166 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 1550898 is about 1245.3505530573. The cubic root of 1550898 is about 115.7517978844.

The spelling of 1550898 in words is "one million, five hundred fifty thousand, eight hundred ninety-eight".