1551061067 has 4 divisors (see below), whose sum is σ = 1632695880. Its totient is φ = 1469426256.

The previous prime is 1551061063. The next prime is 1551061087. The reversal of 1551061067 is 7601601551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7601601551 = 191 ⋅39798961.

It is not a de Polignac number, because 1551061067 - 2² = 1551061063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551061063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40817378 + ... + 40817415.

It is an arithmetic number, because the mean of its divisors is an integer number (408173970).

Almost surely, 2^1551061067 is an apocalyptic number.

1551061067 is a deficient number, since it is larger than the sum of its proper divisors (81634813).

1551061067 is an equidigital number, since it uses as much as digits as its factorization.

1551061067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81634812.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 1551061067 is about 39383.5126290177. The cubic root of 1551061067 is about 1157.5585459583.

The spelling of 1551061067 in words is "one billion, five hundred fifty-one million, sixty-one thousand, sixty-seven".