1371445 has 8 divisors (see below), whose sum is σ = 1662336. Its totient is φ = 1086096.

The previous prime is 1371431. The next prime is 1371449. The reversal of 1371445 is 5441731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1371445 - 2⁹ = 1370933 is a prime.

It is a super-2 number, since 2×1371445² = 3761722776050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817 + ... + 1846.

It is an arithmetic number, because the mean of its divisors is an integer number (207792).

2^1371445 is an apocalyptic number.

It is an amenable number.

1371445 is a deficient number, since it is larger than the sum of its proper divisors (290891).

1371445 is a wasteful number, since it uses less digits than its factorization.

1371445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771.

The product of its digits is 1680, while the sum is 25.

The square root of 1371445 is about 1171.0871017990. The cubic root of 1371445 is about 111.1030884948.

The spelling of 1371445 in words is "one million, three hundred seventy-one thousand, four hundred forty-five".