1550073 has 16 divisors (see below), whose sum is σ = 2379776. Its totient is φ = 879120.

The previous prime is 1550069. The next prime is 1550083. The reversal of 1550073 is 3700551.

It is a happy number.

It is not a de Polignac number, because 1550073 - 2² = 1550069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1550033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4518 + ... + 4848.

It is an arithmetic number, because the mean of its divisors is an integer number (148736).

2^1550073 is an apocalyptic number.

It is an amenable number.

1550073 is a deficient number, since it is larger than the sum of its proper divisors (829703).

1550073 is a wasteful number, since it uses less digits than its factorization.

1550073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564.

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

The square root of 1550073 is about 1245.0192769592. The cubic root of 1550073 is about 115.7312695257.

The spelling of 1550073 in words is "one million, five hundred fifty thousand, seventy-three".