1551456 has 36 divisors (see below), whose sum is σ = 4412772. Its totient is φ = 517056.

The previous prime is 1551449. The next prime is 1551463. The reversal of 1551456 is 6541551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1551449) and next prime (1551463).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2406 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (122577).

2^1551456 is an apocalyptic number.

1551456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1551456 is an abundant number, since it is smaller than the sum of its proper divisors (2861316).

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

1551456 is a wasteful number, since it uses less digits than its factorization.

1551456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403 (or 5392 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 1551456 is about 1245.5745662143. The cubic root of 1551456 is about 115.7656783929.

The spelling of 1551456 in words is "one million, five hundred fifty-one thousand, four hundred fifty-six".