5551291401 has 32 divisors (see below), whose sum is σ = 8018569728. Its totient is φ = 3402792960.

The previous prime is 5551291393. The next prime is 5551291409. The reversal of 5551291401 is 1041921555.

It is an interprime number because it is at equal distance from previous prime (5551291393) and next prime (5551291409).

It is not a de Polignac number, because 5551291401 - 2³ = 5551291393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5551291409) 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, 1534671 + ... + 1538283.

It is an arithmetic number, because the mean of its divisors is an integer number (250580304).

Almost surely, 2^5551291401 is an apocalyptic number.

5551291401 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5551291401 is a deficient number, since it is larger than the sum of its proper divisors (2467278327).

5551291401 is a wasteful number, since it uses less digits than its factorization.

5551291401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321.

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 5551291401 is about 74506.9889406356. The cubic root of 5551291401 is about 1770.6443652830.

The spelling of 5551291401 in words is "five billion, five hundred fifty-one million, two hundred ninety-one thousand, four hundred one".