1552401555 has 32 divisors (see below), whose sum is σ = 2631959040. Its totient is φ = 779155200.

The previous prime is 1552401553. The next prime is 1552401589. The reversal of 1552401555 is 5551042551.

It is not a de Polignac number, because 1552401555 - 2¹ = 1552401553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1552401551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24999 + ... + 61071.

It is an arithmetic number, because the mean of its divisors is an integer number (82248720).

Almost surely, 2^1552401555 is an apocalyptic number.

1552401555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1552401555 is a deficient number, since it is larger than the sum of its proper divisors (1079557485).

1552401555 is a wasteful number, since it uses less digits than its factorization.

1552401555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36251.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 1552401555 is about 39400.5273441867. The cubic root of 1552401555 is about 1157.8919191517.

The spelling of 1552401555 in words is "one billion, five hundred fifty-two million, four hundred one thousand, five hundred fifty-five".