1550730 has 16 divisors (see below), whose sum is σ = 3721824. Its totient is φ = 413520.

The previous prime is 1550701. The next prime is 1550737. The reversal of 1550730 is 370551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1550697 and 1550706.

It is not an unprimeable number, because it can be changed into a prime (1550737) 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 7 ways as a sum of consecutive naturals, for example, 25816 + ... + 25875.

It is an arithmetic number, because the mean of its divisors is an integer number (232614).

2^1550730 is an apocalyptic number.

1550730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550730 is an abundant number, since it is smaller than the sum of its proper divisors (2171094).

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

1550730 is a wasteful number, since it uses less digits than its factorization.

1550730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51701.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 1550730 is about 1245.2831003431. The cubic root of 1550730 is about 115.7476181545.

The spelling of 1550730 in words is "one million, five hundred fifty thousand, seven hundred thirty".