1551936 has 56 divisors (see below), whose sum is σ = 4206240. Its totient is φ = 504832.

The previous prime is 1551929. The next prime is 1551943. The reversal of 1551936 is 6391551.

It is an interprime number because it is at equal distance from previous prime (1551929) and next prime (1551943).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11260 + ... + 11396.

2^1551936 is an apocalyptic number.

1551936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2103120).

1551936 is an abundant number, since it is smaller than the sum of its proper divisors (2654304).

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

1551936 is a wasteful number, since it uses less digits than its factorization.

1551936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 201 counting only the distinct ones).

The product of its digits is 4050, while the sum is 30.

The square root of 1551936 is about 1245.7672334750. The cubic root of 1551936 is about 115.7776159526. Note that the first 3 decimals are identical.

The spelling of 1551936 in words is "one million, five hundred fifty-one thousand, nine hundred thirty-six".