1461551 has 8 divisors (see below), whose sum is σ = 1798944. Its totient is φ = 1156320.

The previous prime is 1461517. The next prime is 1461553. The reversal of 1461551 is 1551641.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461551 is a prime.

It is a super-2 number, since 2×1461551² = 4272262651202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461553) 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, 7940 + ... + 8121.

It is an arithmetic number, because the mean of its divisors is an integer number (224868).

2^1461551 is an apocalyptic number.

1461551 is a deficient number, since it is larger than the sum of its proper divisors (337393).

1461551 is a wasteful number, since it uses less digits than its factorization.

1461551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16081.

The product of its digits is 600, while the sum is 23.

The square root of 1461551 is about 1208.9462353637. The cubic root of 1461551 is about 113.4848770499.

The spelling of 1461551 in words is "one million, four hundred sixty-one thousand, five hundred fifty-one".