1552978 has 8 divisors (see below), whose sum is σ = 2662272. Its totient is φ = 665556.

The previous prime is 1552963. The next prime is 1552981. The reversal of 1552978 is 8792551.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55450 + ... + 55477.

It is an arithmetic number, because the mean of its divisors is an integer number (332784).

2^1552978 is an apocalyptic number.

1552978 is a deficient number, since it is larger than the sum of its proper divisors (1109294).

1552978 is a wasteful number, since it uses less digits than its factorization.

1552978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110936.

The product of its digits is 25200, while the sum is 37.

The square root of 1552978 is about 1246.1853794681. The cubic root of 1552978 is about 115.8035219362.

The spelling of 1552978 in words is "one million, five hundred fifty-two thousand, nine hundred seventy-eight".