1551474 has 40 divisors (see below), whose sum is σ = 3555948. Its totient is φ = 505440.

The previous prime is 1551467. The next prime is 1551479. The reversal of 1551474 is 4741551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1306449 + 245025 = 1143^2 + 495^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

1551474 is an undulating number in base 13.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1551479) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9804 + ... + 9960.

2^1551474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777974).

1551474 is an abundant number, since it is smaller than the sum of its proper divisors (2004474).

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

1551474 is a wasteful number, since it uses less digits than its factorization.

1551474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 223 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 1551474 is about 1245.5817917744. The cubic root of 1551474 is about 115.7661260958.

It can be divided in two parts, 1551 and 474, that added together give a square (2025 = 45²).

The spelling of 1551474 in words is "one million, five hundred fifty-one thousand, four hundred seventy-four".