1055072478 has 16 divisors (see below), whose sum is σ = 2110554000. Its totient is φ = 351622656.

The previous prime is 1055072477. The next prime is 1055072509. The reversal of 1055072478 is 8742705501.

It is a super-2 number, since 2×1055072478² = 2226355867666120968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055072477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24148 + ... + 51896.

It is an arithmetic number, because the mean of its divisors is an integer number (131909625).

Almost surely, 2^1055072478 is an apocalyptic number.

1055072478 is an abundant number, since it is smaller than the sum of its proper divisors (1055481522).

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

1055072478 is a wasteful number, since it uses less digits than its factorization.

1055072478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34091.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 1055072478 is about 32481.8792251926. The cubic root of 1055072478 is about 1018.0304419499.

Adding to 1055072478 its reverse (8742705501), we get a palindrome (9797777979).

It can be divided in two parts, 10550 and 72478, that added together give a triangular number (83028 = T₄₀₇).

The spelling of 1055072478 in words is "one billion, fifty-five million, seventy-two thousand, four hundred seventy-eight".