1551201 has 4 divisors (see below), whose sum is σ = 2068272. Its totient is φ = 1034132.

The previous prime is 1551197. The next prime is 1551203. The reversal of 1551201 is 1021551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1551201 - 2² = 1551197 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1551203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258531 + ... + 258536.

It is an arithmetic number, because the mean of its divisors is an integer number (517068).

2^1551201 is an apocalyptic number.

It is an amenable number.

1551201 is a deficient number, since it is larger than the sum of its proper divisors (517071).

1551201 is an equidigital number, since it uses as much as digits as its factorization.

1551201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517070.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1551201 is about 1245.4721996094. The cubic root of 1551201 is about 115.7593355628.

Adding to 1551201 its reverse (1021551), we get a palindrome (2572752).

The spelling of 1551201 in words is "one million, five hundred fifty-one thousand, two hundred one".