5445551 has 4 divisors (see below), whose sum is σ = 5496552. Its totient is φ = 5394552.

The previous prime is 5445541. The next prime is 5445577. The reversal of 5445551 is 1555445.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5445551 - 2²² = 1251247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5445541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25340 + ... + 25553.

It is an arithmetic number, because the mean of its divisors is an integer number (1374138).

Almost surely, 2^5445551 is an apocalyptic number.

5445551 is a deficient number, since it is larger than the sum of its proper divisors (51001).

5445551 is a wasteful number, since it uses less digits than its factorization.

5445551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51000.

The product of its digits is 10000, while the sum is 29.

The square root of 5445551 is about 2333.5704403339. The cubic root of 5445551 is about 175.9329871427.

The spelling of 5445551 in words is "five million, four hundred forty-five thousand, five hundred fifty-one".