1051215 has 32 divisors (see below), whose sum is σ = 1921536. Its totient is φ = 485760.

The previous prime is 1051181. The next prime is 1051247. The reversal of 1051215 is 5121501.

1051215 = 208² + 209² + ... + 229².

It is not a de Polignac number, because 1051215 - 2⁶ = 1051151 is a prime.

It is a super-2 number, since 2×1051215² = 2210105952450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1051194 and 1051203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3657 + ... + 3933.

It is an arithmetic number, because the mean of its divisors is an integer number (60048).

2^1051215 is an apocalyptic number.

1051215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1051215 is a deficient number, since it is larger than the sum of its proper divisors (870321).

1051215 is a wasteful number, since it uses less digits than its factorization.

1051215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

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

The square root of 1051215 is about 1025.2877644837. The cubic root of 1051215 is about 101.6788244292.

Adding to 1051215 its reverse (5121501), we get a palindrome (6172716).

The spelling of 1051215 in words is "one million, fifty-one thousand, two hundred fifteen".