1551515055 has 8 divisors (see below), whose sum is σ = 2482424112. Its totient is φ = 827474688.

The previous prime is 1551515027. The next prime is 1551515113. The reversal of 1551515055 is 5505151551.

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

It is not a de Polignac number, because 1551515055 - 2¹² = 1551510959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51717154 + ... + 51717183.

It is an arithmetic number, because the mean of its divisors is an integer number (310303014).

Almost surely, 2^1551515055 is an apocalyptic number.

1551515055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1551515055 is a deficient number, since it is larger than the sum of its proper divisors (930909057).

1551515055 is a wasteful number, since it uses less digits than its factorization.

1551515055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103434345.

The product of its (nonzero) digits is 15625, while the sum is 33.

The square root of 1551515055 is about 39389.2758882415. The cubic root of 1551515055 is about 1157.6714721859.

The spelling of 1551515055 in words is "one billion, five hundred fifty-one million, five hundred fifteen thousand, fifty-five".