1078657551 has 6 divisors (see below), whose sum is σ = 1558060920. Its totient is φ = 719105028.

The previous prime is 1078657549. The next prime is 1078657579. The reversal of 1078657551 is 1557568701.

1078657551 is a `hidden beast` number, since 1 + 0 + 78 + 6 + 575 + 5 + 1 = 666.

It is not a de Polignac number, because 1078657551 - 2¹ = 1078657549 is a prime.

It is a super-2 number, since 2×1078657551² = 2327004224658635202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1078657497 and 1078657506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078657501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59925411 + ... + 59925428.

It is an arithmetic number, because the mean of its divisors is an integer number (259676820).

Almost surely, 2^1078657551 is an apocalyptic number.

1078657551 is a deficient number, since it is larger than the sum of its proper divisors (479403369).

1078657551 is a wasteful number, since it uses less digits than its factorization.

1078657551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119850845 (or 119850842 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 45.

The square root of 1078657551 is about 32842.9223882407. The cubic root of 1078657551 is about 1025.5602888785.

The spelling of 1078657551 in words is "one billion, seventy-eight million, six hundred fifty-seven thousand, five hundred fifty-one".