1551106772 has 6 divisors (see below), whose sum is σ = 2714436858. Its totient is φ = 775553384.

The previous prime is 1551106763. The next prime is 1551106811. The reversal of 1551106772 is 2776011551.

It can be written as a sum of positive squares in only one way, i.e., 1423100176 + 128006596 = 37724^2 + 11314^2 .

It is a super-3 number, since 3×1551106772³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193888343 + ... + 193888350.

It is an arithmetic number, because the mean of its divisors is an integer number (452406143).

Almost surely, 2^1551106772 is an apocalyptic number.

It is an amenable number.

1551106772 is a deficient number, since it is larger than the sum of its proper divisors (1163330086).

1551106772 is a wasteful number, since it uses less digits than its factorization.

1551106772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387776697 (or 387776695 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 35.

The square root of 1551106772 is about 39384.0928802480. The cubic root of 1551106772 is about 1157.5699157435.

The spelling of 1551106772 in words is "one billion, five hundred fifty-one million, one hundred six thousand, seven hundred seventy-two".