1051555 has 8 divisors (see below), whose sum is σ = 1328400. Its totient is φ = 796896.

The previous prime is 1051553. The next prime is 1051559. The reversal of 1051555 is 5551501.

1051555 = T₂₁₆ + T₂₁₇ + ... + T₂₅₃.

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

It is a cyclic number.

It is not a de Polignac number, because 1051555 - 2¹ = 1051553 is a prime.

It is a super-2 number, since 2×1051555² = 2211535836050, which contains 22 as substring.

1051555 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051553) 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, 5440 + ... + 5629.

It is an arithmetic number, because the mean of its divisors is an integer number (166050).

2^1051555 is an apocalyptic number.

1051555 is a deficient number, since it is larger than the sum of its proper divisors (276845).

1051555 is a wasteful number, since it uses less digits than its factorization.

1051555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11093.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1051555 is about 1025.4535581878. The cubic root of 1051555 is about 101.6897854200.

The spelling of 1051555 in words is "one million, fifty-one thousand, five hundred fifty-five".